Category: 71617-10-2

Verhagen, Rory published the artcileCalibration parameters for the passive sampling of organic UV filters by silicone; diffusion coefficients and silicone-water partition coefficients, Application In Synthesis of 71617-10-2, the main research area is organic UV filter passive sampling silicone water partition coefficient; Diffusion coefficient; Organic UV filters; Partition coefficient; Passive sampling; Single dose design.

In recent years, organic UV filters (UVFs) received considerable attention as a group of emerging contaminants, including in Australia where the use of UVFs is particularly relevant. Passive sampling using polymers has become widely used for routine monitoring of chems. in the aquatic environment. Application of passive samplers for monitoring chems. in the water relies on calibration data such as chem.’s polymer-water partition coefficient (Kpw) and diffusion coefficients in the sampling material (Dp), for understanding uptake and kinetic limitations. In the present study, Kpw and Dp for nine UVFs were estimated Kpw values were determined in different water – polymer partition experiments where (1) a given mass of chems. was dosed into the water and (2) into the polymer. Diffusion coefficients were determined using the stacking method. The estimated log Kpw and log Dp ranged from 2.9 to 6.4 L kg-1 and -11.1 to -10.5 m2s-1, resp. The sufficient high Dp allows application of kinetic models that only consider water boundary-controlled uptake for converting silicone sampler uptake into an aqueous phase concentration using the presented Kpw.

Chemosphere published new progress about Diffusion. 71617-10-2 belongs to class esters-buliding-blocks, name is Isopentyl 3-(4-methoxyphenyl)acrylate, and the molecular formula is C15H20O3, Application In Synthesis of 71617-10-2.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Blanco-Zubiaguirre, L. published the artcileTarget and suspect screening of substances liable to migrate from food contact paper and cardboard materials using liquid chromatography-high resolution tandem mass spectrometry, Computed Properties of 71617-10-2, the main research area is food contact paper cardboard substance migration LC HRMS; Food contact paper and board materials; Liquid chromatography-high resolution mass spectrometry; Migration; Quantitative target analysis; Suspect screening; Tenax®.

This work describes the anal. of both target and non-target compounds in paper and cardboard materials together with the characterization of their migration to Tenax by means of liquid chromatog. coupled to both low (LC-QqQ) and high resolution tandem mass spectrometry (LC-q-Orbitrap), resp. To this aim, an entire anal. procedure was fully developed and validated for both matrixes: paper/cardboard and Tenax. A total of 97 chems., including photoinitiators, phthalates, biocides, antioxidants, etc., listed by the European Regulation, were found in the materials under study together with other substances not included in this list. Moreover, the majority of annotated substances were present in the simulant, giving evidence of their migration capacity. Migration percentages of 10 photoinitiators, 4 phthalates, bisphenol A, bis-(2-ethylhexyl) adipate, acetyltributyl citrate and caprolactam to Tenax were quantified. Despite not exceeding the established specific migration limit (SML) in any case, benzophenone, 4-phenylbenzophenone and bisphenol A concentrations in some paper and cardboard materials were very close to the SML values established by the EU legislation.

Talanta published new progress about Diffusion. 71617-10-2 belongs to class esters-buliding-blocks, name is Isopentyl 3-(4-methoxyphenyl)acrylate, and the molecular formula is C15H20O3, Computed Properties of 71617-10-2.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Santana-Viera, Sergio published the artcileUV filters and UV stabilisers adsorbed in microplastic debris from beach sand, Computed Properties of 71617-10-2, the main research area is UV filter stabilizer microplastic beach sand adsorption pollution vector; Adsorption; Beach sand; Microplastics; Pollution vector; UV filters and stabilisers.

Microplastics (MPs) in oceans adsorb different types of pollutants, which can neg. impact the food chain. The extensive use of personal care products (PCPs) has led to their ubiquitous environmental presence, and their partition between plastic matrixes and surroundings is determined by their physico-chem. characteristics and environmental conditions. This work develops and applies a methodol. to determine 12 UV filters (UVFs) and UV stabilizers (UVSs) in MPs collected in beach sand. The analyzes were carried out by ultrasound-assisted extraction and ultrahigh-performance liquid chromatog. with tandem mass spectrometry detection. The validated procedure was applied to MPs samples taken in sand samples from 13 beaches on the Canary Islands (Spain). The results showed the presence of 10 UV filters and UV stabilizers at concentrations between 1 and 4031 ng·g-1, where octocrylene was the most frequently found. The target analytes were present in all the sampling beaches.

Marine Pollution Bulletin published new progress about Adsorption. 71617-10-2 belongs to class esters-buliding-blocks, name is Isopentyl 3-(4-methoxyphenyl)acrylate, and the molecular formula is C15H20O3, Computed Properties of 71617-10-2.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Nurerk, Piyaluk published the artcileSolid-phase extraction based on MIL-101 adsorbent followed by gas chromatography tandem mass spectrometry for the analysis of multiclass organic UV filters in water, Recommanded Product: Isopentyl 3-(4-methoxyphenyl)acrylate, the main research area is UV filter water pollution detection Metal organic framework adsorbent; Experimental design; Gas chromatography tandem mass spectrometry; Metal organic frameworks; Solid-phase extraction; UV filters.

A metal organic framework material MIL-101 was developed as an effective solid-phase extraction adsorbent for the extraction of eleven UV filters compounds The MIL-101 adsorbent was packed into a polypropylene cartridge and connected at the outlet tip with the Visiprep vacuum manifolds allowing process up to 12-port SPE samples, simultaneously. The extracted UV filters were quantified by gas chromatog.-tandem mass spectrometry. Several parameters affecting the extraction efficiency of the target analytes, i.e. desorption conditions, sample pH, the addition of salt and sample volume were optimized by ANOVA anal. followed by a multifactorial design. The sample breakthrough volume of the developed method was also evaluated. The SPE-GC-MS/MS method was validated in terms of linearity (R2 ≥ 0.9973), accuracy (with satisfactory recovery from 82% to 105%), precision (relative standard deviation of less than 10%) and limits of detection ranging from 1.0 to 11.7 ng L-1. The validated method was successfully applied for the extraction and quantification of the target UV filters in different types of water samples, including lake, river, seawater and swimming pool waters. The most often found UV filters were octocrylene, 4-methylbencylidene camphor and homosalate that also came out with the highest concentrations, up to 4000 ng L-1, particularly in swimming pool waters.

Journal of Chromatography A published new progress about Adsorbents. 71617-10-2 belongs to class esters-buliding-blocks, name is Isopentyl 3-(4-methoxyphenyl)acrylate, and the molecular formula is C15H20O3, Recommanded Product: Isopentyl 3-(4-methoxyphenyl)acrylate.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Homem, Vera published the artcileGone with the flow – Assessment of personal care products in Portuguese rivers, Formula: C15H20O3, the main research area is personal care product flow Portuguese river; GC–MS/MS; Personal care products; Solid-phase microextraction; Surface water.

Although there are several works in the literature that study the presence of pharmaceuticals and personal care products (PPCPs) in surface waters, the vast majority focus their attention on pharmaceuticals and little information is found about personal care products (PCPs). Therefore, this study focused, for the first time, on the monitoring of five classes of PCPs-fragrance allergens, synthetic musks, phthalates, antioxidants, and UV-filters-in the surface water of four small-size typically pollution-impacted Portuguese rivers (Ave, Leca, Antua≈and Certima). A solid-phase microextraction (SPME) followed by gas chromatog.-tandem mass spectrometry (GC-MS/MS) protocol was employed to analyze surface water samples collected in two seasonal campaigns-summer and winter (34 samples per season). A total of 22 out of 37 target PCPs were detected concomitantly at least once in one sampling point, being the most frequently detected α-isomethyl ionone, galaxolide, tonalide and cashmeran. The highest concentrations were confirmed for diethylhexyl phthalate (610.6 ng L-1), galaxolide (379.2 ng L-1), geraniol (290.9 ng L-1), linalool (271.2 ng L-1), benzophenone-3 (254.1 ng L-1) and citronellol (200.2 ng L-1). Leca River, traversing the more densely urban and industrialized area, had the highest levels of contaminants, which were also found in the sampling points located downstream of wastewater treatment plants discharge points. In general, higher levels were detected in summer, when the river flows are lower. Hazard quotients were determined and octocrylene, tonalide, and geraniol presented values above 1 in some sampling sites, which may indicate an ecotoxicol. risk to the aquatic environment. The results presented suggest that these three PCPs should be included as priority pollutants in environmental monitoring schemes in surface waters, due to their high detection, persistence, and potential adverse effects.

Chemosphere published new progress about Daphnia. 71617-10-2 belongs to class esters-buliding-blocks, name is Isopentyl 3-(4-methoxyphenyl)acrylate, and the molecular formula is C15H20O3, Formula: C15H20O3.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Verhagen, Rory published the artcileCalibration parameters for the passive sampling of organic UV filters by silicone; diffusion coefficients and silicone-water partition coefficients, Application In Synthesis of 71617-10-2, the main research area is organic UV filter passive sampling silicone water partition coefficient; Diffusion coefficient; Organic UV filters; Partition coefficient; Passive sampling; Single dose design.

In recent years, organic UV filters (UVFs) received considerable attention as a group of emerging contaminants, including in Australia where the use of UVFs is particularly relevant. Passive sampling using polymers has become widely used for routine monitoring of chems. in the aquatic environment. Application of passive samplers for monitoring chems. in the water relies on calibration data such as chem.’s polymer-water partition coefficient (Kpw) and diffusion coefficients in the sampling material (Dp), for understanding uptake and kinetic limitations. In the present study, Kpw and Dp for nine UVFs were estimated Kpw values were determined in different water – polymer partition experiments where (1) a given mass of chems. was dosed into the water and (2) into the polymer. Diffusion coefficients were determined using the stacking method. The estimated log Kpw and log Dp ranged from 2.9 to 6.4 L kg-1 and -11.1 to -10.5 m2s-1, resp. The sufficient high Dp allows application of kinetic models that only consider water boundary-controlled uptake for converting silicone sampler uptake into an aqueous phase concentration using the presented Kpw.

Chemosphere published new progress about Diffusion. 71617-10-2 belongs to class esters-buliding-blocks, name is Isopentyl 3-(4-methoxyphenyl)acrylate, and the molecular formula is C15H20O3, Application In Synthesis of 71617-10-2.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Blanco-Zubiaguirre, L. published the artcileTarget and suspect screening of substances liable to migrate from food contact paper and cardboard materials using liquid chromatography-high resolution tandem mass spectrometry, Computed Properties of 71617-10-2, the main research area is food contact paper cardboard substance migration LC HRMS; Food contact paper and board materials; Liquid chromatography-high resolution mass spectrometry; Migration; Quantitative target analysis; Suspect screening; Tenax®.

This work describes the anal. of both target and non-target compounds in paper and cardboard materials together with the characterization of their migration to Tenax by means of liquid chromatog. coupled to both low (LC-QqQ) and high resolution tandem mass spectrometry (LC-q-Orbitrap), resp. To this aim, an entire anal. procedure was fully developed and validated for both matrixes: paper/cardboard and Tenax. A total of 97 chems., including photoinitiators, phthalates, biocides, antioxidants, etc., listed by the European Regulation, were found in the materials under study together with other substances not included in this list. Moreover, the majority of annotated substances were present in the simulant, giving evidence of their migration capacity. Migration percentages of 10 photoinitiators, 4 phthalates, bisphenol A, bis-(2-ethylhexyl) adipate, acetyltributyl citrate and caprolactam to Tenax were quantified. Despite not exceeding the established specific migration limit (SML) in any case, benzophenone, 4-phenylbenzophenone and bisphenol A concentrations in some paper and cardboard materials were very close to the SML values established by the EU legislation.

Talanta published new progress about Diffusion. 71617-10-2 belongs to class esters-buliding-blocks, name is Isopentyl 3-(4-methoxyphenyl)acrylate, and the molecular formula is C15H20O3, Computed Properties of 71617-10-2.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Santana-Viera, Sergio published the artcileUV filters and UV stabilisers adsorbed in microplastic debris from beach sand, Computed Properties of 71617-10-2, the main research area is UV filter stabilizer microplastic beach sand adsorption pollution vector; Adsorption; Beach sand; Microplastics; Pollution vector; UV filters and stabilisers.

Microplastics (MPs) in oceans adsorb different types of pollutants, which can neg. impact the food chain. The extensive use of personal care products (PCPs) has led to their ubiquitous environmental presence, and their partition between plastic matrixes and surroundings is determined by their physico-chem. characteristics and environmental conditions. This work develops and applies a methodol. to determine 12 UV filters (UVFs) and UV stabilizers (UVSs) in MPs collected in beach sand. The analyzes were carried out by ultrasound-assisted extraction and ultrahigh-performance liquid chromatog. with tandem mass spectrometry detection. The validated procedure was applied to MPs samples taken in sand samples from 13 beaches on the Canary Islands (Spain). The results showed the presence of 10 UV filters and UV stabilizers at concentrations between 1 and 4031 ng·g-1, where octocrylene was the most frequently found. The target analytes were present in all the sampling beaches.

Marine Pollution Bulletin published new progress about Adsorption. 71617-10-2 belongs to class esters-buliding-blocks, name is Isopentyl 3-(4-methoxyphenyl)acrylate, and the molecular formula is C15H20O3, Computed Properties of 71617-10-2.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Nurerk, Piyaluk published the artcileSolid-phase extraction based on MIL-101 adsorbent followed by gas chromatography tandem mass spectrometry for the analysis of multiclass organic UV filters in water, Recommanded Product: Isopentyl 3-(4-methoxyphenyl)acrylate, the main research area is UV filter water pollution detection Metal organic framework adsorbent; Experimental design; Gas chromatography tandem mass spectrometry; Metal organic frameworks; Solid-phase extraction; UV filters.

A metal organic framework material MIL-101 was developed as an effective solid-phase extraction adsorbent for the extraction of eleven UV filters compounds The MIL-101 adsorbent was packed into a polypropylene cartridge and connected at the outlet tip with the Visiprep vacuum manifolds allowing process up to 12-port SPE samples, simultaneously. The extracted UV filters were quantified by gas chromatog.-tandem mass spectrometry. Several parameters affecting the extraction efficiency of the target analytes, i.e. desorption conditions, sample pH, the addition of salt and sample volume were optimized by ANOVA anal. followed by a multifactorial design. The sample breakthrough volume of the developed method was also evaluated. The SPE-GC-MS/MS method was validated in terms of linearity (R2 ≥ 0.9973), accuracy (with satisfactory recovery from 82% to 105%), precision (relative standard deviation of less than 10%) and limits of detection ranging from 1.0 to 11.7 ng L-1. The validated method was successfully applied for the extraction and quantification of the target UV filters in different types of water samples, including lake, river, seawater and swimming pool waters. The most often found UV filters were octocrylene, 4-methylbencylidene camphor and homosalate that also came out with the highest concentrations, up to 4000 ng L-1, particularly in swimming pool waters.

Journal of Chromatography A published new progress about Adsorbents. 71617-10-2 belongs to class esters-buliding-blocks, name is Isopentyl 3-(4-methoxyphenyl)acrylate, and the molecular formula is C15H20O3, Recommanded Product: Isopentyl 3-(4-methoxyphenyl)acrylate.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Tang, Shuqin published the artcileA Cocktail of Industrial Chemicals in Lipstick and Nail Polish: Profiles and Health Implications, Application In Synthesis of 71617-10-2, the main research area is industrial chem lipstick nail polish health exposure risk assessment.

Beauty products contain various industrial chems. to increase their functionality and appearance. The frequent use of beauty products may increase human exposure to industrial chems., but to date, their chem. components remain poorly characterized. Our work characterized the chem. components in lipstick and nail polish by screening for a total of 231 chems. from seven categories, including organophosphate esters (OPEs), phthalate esters (PAEs), non-PAE plasticizers, bisphenol analogs, parabens, UV stabilizers, and antioxidants. Their total concentrations ranged from 38.9 to 3810 μg/g (median of 193 μg/g) and from 18.6 to 1910 μg/g (307 μg/g) in lipstick (n = 34) and nail polish (n = 15), resp. The chem. compositions differed between lipstick and nail polish, but non-PAE plasticizers generally dominated over other groups of chems. A number of emerging plasticizers, OPEs, and UV stabilizers have rarely been reported in personal care products or environmental samples but were found at very high levels in beauty products, raising concern about their environmental release and human exposure risk. Although the employment of a hazard quotient approach suggested low health risks for exposure to industrial chems. from the use of beauty products, potential mixture effects from the chem. cocktail and occupational exposure to beauty products should not be overlooked.

Environmental Science & Technology Letters published new progress about Antioxidants. 71617-10-2 belongs to class esters-buliding-blocks, name is Isopentyl 3-(4-methoxyphenyl)acrylate, and the molecular formula is C15H20O3, Application In Synthesis of 71617-10-2.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics