Tissue distribution of phthalates in celery under different cultivation patterns and associated dietary exposure was written by Zhao, Fang;Ma, Zhihong;Ping, Hua;He, Zhaoying;Li, Bingru;Gao, Yuan;Li, Cheng. And the article was included in Environmental Pollution (Oxford, United Kingdom) in 2022.Quality Control of Dicyclohexyl phthalate This article mentions the following:
To investigate tissue distribution, spatial difference, temperature variation, and potential health risks of PAEs in vegetables, celery was used as a model plant. Celery samples were collected from open fields and greenhouses from two provinces in China over four seasons. Celery tissues were analyzed for 16 PAE compounds by gas chromatog.-tandem mass spectrometry. The total content of PAEs was 89.0-1130.3μg kg-1 dry weight (dw) in stems and 155.0-2730.8μg kg-1 dw in leaves. Concentrations of PAEs in celeries showed notable spatial differences (P < 0.05), and the levels in samples from open fields were lower than those in samples from plastic greenhouses. In celeries from greenhouses, higher PAE concentrations were observed for plants grown at high temperatures than in plants grown at low temperatures Discrepancies in tissue distribution indicated different uptake pathways of PAE contaminants. Risk assessments to humans found that both carcinogenic risks and non-carcinogenic risks of PAEs via celery consumption were at an acceptable level. Further research should consider other exposure pathways of PAEs and pay special attention to reducing PAE contents in vegetables. In the experiment, the researchers used many compounds, for example, Dicyclohexyl phthalate (cas: 84-61-7Quality Control of Dicyclohexyl phthalate).
Dicyclohexyl phthalate (cas: 84-61-7) belongs to esters. Esters perform as high-grade solvents for a broad array of plastics, plasticizers, resins, and lacquers, and are one of the largest classes of synthetic lubricants on the commercial market. Polyesters are important plastics, with monomers linked by ester moieties. Esters contain a carbonyl center, which gives rise to 120° C–C–O and O–C–O angles. Unlike amides, esters are structurally flexible functional groups because rotation about the C–O–C bonds has a low barrier. Their flexibility and low polarity is manifested in their physical properties; they tend to be less rigid (lower melting point) and more volatile (lower boiling point) than the corresponding amides. Quality Control of Dicyclohexyl phthalate
Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics