Machine learning-assisted non-destructive plasticizer
Plasticizers are used to improve and adjust the mechanical properties of the material by increasing flexibility, reducing viscosity, and decreasing friction during manufacture. Plasticizers can...
Plasticizer Analysis Using Chromatographic Methods - Advances
Plasticizer analysis is indispensable in establishing the purity of technical plasticizers and determining the chemical nature of plasticizers in finished and semi-finished articles. When plastics are used for food packaging and similar purposes, only certain nontoxic substances are acceptable as plasticizers, and this is why health authorities take an active interest in plasticizer analysis
Methods for determination of plasticizer migration
While chromatographic analysis can be automated, conventional soaking extraction is time-consuming, and requires large amounts of solvents. Indeed, laboratories testing plasticizer migration are required to process multiple specimens on a daily basis. As such, the extraction process is often a severe bottleneck in the analytical workflow.
Determination of plasticizer residues in tea by solid phase
Human exposure to plasticizers is widespread because these compounds are commonly found in the environment. Nevertheless, studies on human dietary exposure to plasticizers are limited. This research deals with the evaluation of 27 plasticizer residues in tea infusion samples brewed with and without bag. Levels were determined by solid phase extraction–gas chromatography–mass spectrometry
Determination of Polymer Additives-Antioxidants, Ultraviolet
Abstract. An analytical method for the quantitative determination of 4 antioxidants, 9 ultraviolet (UV) stabilizers, 12 phthalate plasticizers and 2 photoinitiators in plastic food package using accelerated solvent extraction (ASE) coupled with high-performance liquid chromatography-photodiode array detector (HPLC-PDA) has been developed.
- Can a gradient liquid chromatographic method be used to quantify plasticizers?
- 4. Conclusion This new gradient liquid chromatographic method using an HPLC–UV system over a short period of time (13 min) has been developed, improved and validated for the quantification of four plasticizers commonly used in MDs as DEHP-substitutes (ATBC, DEHT, DINCH and TOTM).
- Which plasticizer is most commonly used?
- Di- (2-ethylhexyl)-phthalate (DEHP) has been the most widely used plasticizer since its introduction in 1930. However, the non-covalent bond between DEHP (or plasticizers in general) and polymers mean they can be leached when they enter into contact with fluids containing lipophilic compounds .
- How is a plasticizer weighed?
- Each plasticizer was weighed on a precision scale (model 220 XT, Dietikon, Switzerland) directly in a volumetric flask and dissolved in ACN to get stock solutions: BBP, DEHP, DEHT, TOTM at 0.5 mg/mL and ATBC, DINCH at 10 mg/mL.
- Which plasticizers were separated by Gradient elution?
- Five plasticizers, acetyl tributyl citrate, di- (2-ethylhexyl)-phthalate, di- (ethylhexyl)-terephthalate, di-isononyl-1,2-cyclohexane-dicarboxylate, and trioctyl trimellitate, were separated on a C8 stationary phase (2.6 μm, 100 mm × 4.6 mm) under gradient elution in 13 min.
- How are plasticizers extracted?
- In their study, plasticizers were extracted by dissolving PVC samples in THF and precipitating with ethanol . The extraction yields of plasticizers (from 91 to 120%) were similar to results presented in our paper (from 91 to 104%), but with greater variability.
- Can plasticizers be quantified by GC–MS?
- Gimeno et al. recently published a new GC–MS technique to quantify 19 plasticizers in a single run. Among their tested compounds ATBC, DEHT, DINCH and TOTM were also analyzed. In their study, plasticizers were extracted by dissolving PVC samples in THF and precipitating with ethanol .
