Revisiting analysis of phthalate plasticizers concentration in poly(vinyl chloride)

Krongauz, Vadim V.; Ling, Michael T.K.; O’Connell, John F.

doi:10.1002/vnl.21396

Cited by 6 publications

(3 citation statements)

References 33 publications

(47 reference statements)

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“…PVC and mPE greenhouse films were especially hazardous, with DEHP concentrations exceeding 140,000 mg kg –1 (Figure ). The high concentration of DEHP in PVC greenhouse films is required to obtain sufficient flexibility and durability. , Meanwhile, PAEs facilitate the processing of mPE products, making them strong and supple . EVA is a copolymer of ethylene and vinyl acetate.…”

Section: Resultsmentioning

confidence: 99%

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Risk Assessment of Agricultural Plastic Films Based on Release Kinetics of Phthalate Acid Esters

Wang

Xiang

et al. 2021

Environ. Sci. Technol.

109

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Plastic films have become an integral part of fruit and vegetable production systems, but their release of phthalate acid esters (PAEs) is a threat to human health. The release kinetics of PAEs and measures of risk are still not well understood. We investigated 50 agricultural films, with concentrations ranging from 2.59 to 282,000 mg kg–1. The seven commercially available film types included were polyvinylchloride (PVC), metallocene polyethylene (mPE), ethylene vinyl acetate (EVA), polyolefin (PO), and three mulch films. Bis(2-ethylhexyl) phthalate (DEHP) was detected in most of films, and its release fitted well into the first-order kinetic model. The release rate of DEHP was negatively related to the film thickness. The potential carcinogenic risks of DEHP in the air of six kinds of plastic greenhouses to human health were estimated. We found that the carcinogenic risks associated with PVC and mPE greenhouse films warrant greater attention. Though EVA, PO greenhouse, and mulch films were lower risk, we advise keeping plastic greenhouses well ventilated during the first month of use to reduce direct human exposure to volatile PAEs.

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Section: Resultsmentioning

confidence: 99%

“…The high concentration of DEHP in PVC greenhouse films is required to obtain sufficient flexibility and durability. 45,46 Meanwhile, PAEs facilitate the processing of mPE products, making them strong and supple. 47 EVA is a copolymer of ethylene and vinyl acetate.…”

Section: Resultsmentioning

confidence: 99%

Risk Assessment of Agricultural Plastic Films Based on Release Kinetics of Phthalate Acid Esters

Wang

Xiang

et al. 2021

Environ. Sci. Technol.

109

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“…However, the proportion of DBP released as determined by solvent extraction of the residual experimental plastic (18.6%) was not consistent with the cumulative proportion of DBP determined from the analysis of the eluates, or gravimetric mass loss. This observation may be due to incomplete solvent extraction of DBP [ 35 ].…”

Section: Additional Informationmentioning

confidence: 99%

Solving a microplastic dilemma? Evaluating additive release with a dynamic leaching method for microplastic assessment (DyLeMMA)

et al. 2023

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A PCR microreactor machinery with passive micropump and battery-powered heater for thermo-cycled amplifications of clinical-level and multiplexed DNA targets

Shi

Geng-xian

2018

Microchim Acta

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A self-contained polymerase chain reaction (PCR) platform with miniaturized power-system is introduced. It is powered by portable lithium batteries and integrated continuous-flow PCR amplification platform. Generally speaking, traditional commercial thermal cyclers rely on external electric supply and thus they are too big in instrument size. This prevents real-timely and field testing during PCR diagnosis. The authors are introducing a continuous-flow 3D spiral microreactor for DNA amplifications and high-resolution multiplexed targets' detection by utilizing the polyvinyl chloride (PVC) tubing-polymer to fabricate the microreactor for the first time. The whole setup (that can all be placed in one hand) includes (a) the thermo-cycled control (5.5 cm width, 10 cm length and 11 cm height), (b) the passive continuous-flow control, and (c) the trapezoidal PCR microreactor. The PCR platform can work for 4.5 h continuously. With minimal accessories and operations, the total cost of the self-contained PCR machinery is <20 $, much lower than the mainstream of commercial PCR machinery. By waiving external electric supply, this miniaturized PCR platform is applied to amplify the typical DNA fragments of plasma isolated hepatitis B virus (HBV), influenza virus (H7N9avian influenza) bacterium (Escherichia coli) plasmid and multiplexed targets. The efficiency of the method is 70% of that of commercial thermal cycler (CFX Connect, Bio Rad). The DNA of H7N9avian influenza can be detected in concentrations as low as 10 copies per μL. Graphical abstract By utilizing the polyvinyl chloride (PVC) tubing-polymer to fabricate the microchip for the first time, this paper introduces a 3D spiral microreactor with a miniaturized power-system supplied by portable AA-batteries, applied in DNA amplifications and high-resolution multiplexed targets' detection. In this microdevice, we made the machinery portable by waiving the external plugs, which solved the problem of traditional commercial thermal cyclers about large volume and expensive price.

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Revisiting analysis of phthalate plasticizers concentration in poly(vinyl chloride)

Cited by 6 publications

References 33 publications

Risk Assessment of Agricultural Plastic Films Based on Release Kinetics of Phthalate Acid Esters

Risk Assessment of Agricultural Plastic Films Based on Release Kinetics of Phthalate Acid Esters

Solving a microplastic dilemma? Evaluating additive release with a dynamic leaching method for microplastic assessment (DyLeMMA)

A PCR microreactor machinery with passive micropump and battery-powered heater for thermo-cycled amplifications of clinical-level and multiplexed DNA targets

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