In 2019.0 MICROCHIM ACTA published article about PERFORMANCE LIQUID-CHROMATOGRAPHY; ENVIRONMENTAL WATER; GAS-CHROMATOGRAPHY; MILK SAMPLES; MICROEXTRACTION; SPECTROMETRY; CARBON; DIURON; BIOSENSORS; IONS in [Guo, Liying; Hao, Lin; Gao, Tian; Wang, Chun; Wu, Qiuhua; Wang, Zhi] Hebei Agr Univ, Dept Chem, Coll Sci, Baoding 071001, Peoples R China in 2019.0, Cited 34.0. The Name is 1-Phenylurea. Through research, I have a further understanding and discovery of 64-10-8. Formula: C7H8N2O
Graphene oxide was covalently modified with p-phenylenediamine via a diazonium reaction. The resulting material was employed as a sorbent for the solid-phase extraction of six phenylurea herbicides (metoxuron, monuron, chlortoluron, isoproturon, monolinuron, and buturon) from environmental water and lettuce leafs. Some key factors that influence the extraction efficiency were studied, including sample loading rate, sample pH, and desorption conditions. Following desorption with acetonitrile, the analytes were quantified by HPLC with UV detection. Under optimized conditions, response to phenylurea herbicides is linear in the 2.0-100ngmL(-1) concentration range for water samples, and 5.0-100ngg(-1) for leaf lettuces. The limits of detection are 0.10-0.25ngmL(-1) for water samples, and 1.5-2.5ngg(-1) for leaf lettuces. The sorbent was also applied to the preconcentration of organic compounds including nitroimidazoles, chlorophenols, phenylurea insecticides and phthalates. This shows that this sorbent has a large potential for the enrichment of organic pollutants.
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Reference:
Thiomorpholine – Wikipedia,
,Thiomorpholine | C4H9NS – PubChem