Human health risk assessment of organophosphorus pesticides in maize (Zea mays L.) from Yushu, Northeast China. Issue 3 (3rd April 2018)

• Record Type: Journal Article
• Authors: Yu, Rui; Wang, Yang; Cui, Zhengwu; Xu, Guanghui; Guan, Zhengyu; Yu, Yong; Liu, Jingshuang
• Is Part Of: Human & ecological risk assessment. Volume 24:Issue 3(2018)
• Page Start: 642
• Page End: 652
• Publication Date: 2018-04-03
• Subjects: acute health risk -- chronic health risk -- organophosphorus pesticides -- maize -- maximum residue limit; Health risk assessment -- Periodicals; Ecological risk assessment -- Periodicals; Ecology -- Periodicals; Risk Assessment -- Periodicals; 363.102
• DOI: 10.1080/10807039.2017.1395686
• Languages: English
• ISSNs: 1080-7039

Abstract

ABSTRACT: In order to investigate organophosphorus pesticides (OPs) concentrations in maize and estimate the health risk to consumers, a total of 55 samples were collected from Yushu, one of the most important maize production areas. The concentrations of the eleven detected OPs in maize were analyzed by gas chromatography coupled with flame photometric detector (GC-FPD). The results showed that OPs concentrations of all maize were not higher than maximum residue limit (MRL), 67.3% of samples below MRL and only in 32.7% of samples was not found OPs. The mean concentrations obtained for the eleven OPs in μg kg -1 were as follows: omethoate (0.8), quinalphos (0.8), phorate (0.7), dimethoate (0.7), parathion-methyl (0.6), isocarbophos (0.6), diazinon (0.5), fenitrothion (0.5), and malathion (0.5), with parathion (0.5) and fenthion (0.3). Phorate (16.4%), dimethoate (16.4%) and quinalphos (16.4%) had the highest frequency in the eleven OPs. 29.1% samples contained two or more kinds of OPs, while 38.2% samples detected one kind of OPs. The target hazard quotients (THQ) values were all less than one and the total acute hazard index (aHI) values for adults and children were 0.051 and 0.121, respectively indicating that consumer may not pose significant chronic and acute health risk through maize.