中文摘要：本文采用QuEChERS方法在四种不同容器中（玻璃杯、陶瓷杯、塑料袋和一次性杯）检测茶汤中12种有机氯（OCS）、9种有机磷（OPS）、11种拟除虫菊酯（SPS）和4种除草剂残留。在散茶和品牌茶中，检测到马拉硫磷含量分别为0.257mg/kg和0.118mg/kg、氯氰菊酯含量分别为0.065mg/kg和0.030mg/kg以及氰戊菊酯含量分别为0.032mg/kg和0.030mg/kg。在草药茶中，只检测到了氯氰菊酯和氰戊菊酯，含量分别为0.053 mg/kg和0.045 mg/kg。在塑料袋装的茶汤只检测到了邻苯二甲酸二丁酯，含量为0.038 mg/kg。一次性杯装的茶汤中检测到了邻苯二甲酸二丁酯和邻苯二甲酸二乙酯，含量分别为0.026 mg/kg和0.004 mg/kg。此外，为了进一步了解农药在茶加工过程中的变化，对加标的生茶冲泡不同的时间（2、5、10分钟），结果发现，在冲泡5分钟时，10%的乐果、敌敌畏、马拉硫磷发生了易位；在冲泡10分钟时，农药浓度有所下降。本文还对在10、30和60分钟内不同塑料容器中邻苯二甲酸酯的浸出状况进行了分析，邻苯二甲酸二丁酯、邻苯二甲酸丁酯和2 -（乙基己基）酯出现了浸出。在一次性杯子中邻苯二甲酸二丁酯、邻苯二甲酸二乙酯和邻苯二甲酸二甲酯出现了浸出。随着保留时间的延长，邻苯二甲酸酯残留量随之增加。农药和邻苯二甲酸盐污染物只在少量样本中被检测到。
外文摘要：In this study, the quick, easy, cheap, effective, rugged, and safe (QuEChERS) method was applied for the analysis of the multiclass pesticide residues of 12 organochlorines (OCs), 9 organophosphates(OPs), 11 synthetic pyrethroids (SPs), 4 herbicides, 6 phthalates in raw tea (loose tea, branded tea and herbal tea), and tea infusion in 4 different containers (glass cup, earthen cup, plastic bag and disposal cup). In loose tea and branded tea residues, malathion (0.257 and 0.118 mg kg(-1)), cypermethrin (0.065 and 0.030 mg kg(-1)), and fenvalerate (0.032 and 0.030 mg kg(-1)) were detected, respectively. In herbal tea, residues of only cypermethrin (0.053 mg kg(-1)) and fenvalerate (0.045 mg kg(-1)) were detected. Tea infusion samples contained in a plastic bag were found to be contaminated with only dibutyl phthalate (DBP)(0.038 mg kg(-1)). Disposable cup was found to be contaminated with DBP (0.026 mg kg(-1)) and diethyl phthalate (DEP) (0.004 mg kg(-1)). Further, to know the processing behavior of pesticides, the spiked raw tea was subjected to tea infusion at different brewing times (2, 5, 10 min). The analysis demonstrated that dimethoate, dichlorvos, and malathion had shown more than 10 % of translocation at 5 min of brewing time. Further brewing for 10 min revealed the reduction in concentration of pesticides. Leaching of phthalate residues from different plastic containers was also studied at 10, 30, and 60 min. DBP, benzyl butyl phthalate (BzBP), and di-2-(ethylhexyl) phthalate (DEHP) were leached in the tea infusion samples packed in plastic bags. On the other hand, in disposable cups, leaching of DBP, DEP, and dimethyl phthalate were found. The concentration of phthalate residues increased with retention time. Pesticide and phthalate contaminants were recorded at lowquantities in few samples only.
 
外文关键词：QuEChERS, Pesticides, Phthalates, Leaching, Tea
作者：Yadav, Sapna; Rai, Satyajeet; Srivastava, Ashutosh K.; Panchal, Smita; Patel, D. K.; Sharma, V. P.; Jain, Sudha; Srivastava, L. P.
作者单位：CSIR Indian Inst Toxicol Res, Pesticide Toxicol Lab, Regulatory Toxicol Grp, Lucknow 226001, Uttar Pradesh, India.
期刊名称：ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
期刊影响因子：2.741
出版年份：2017
出版刊次：1
点击下载：QuEChERS法检测茶中农药和邻苯二甲酸酯残留