摘要
为了解临沧市茶叶中农药残留状况和污染水平,利用气相色谱-串联质谱法(GC-MS)对临沧市(1区7县)市售的309个茶叶样品中19种农药残留情况进行定量分析。结果表明,在309份茶叶样品中共有13份样品有农残阳性检出,检出率4.21%,合格率100%。其中,耿马县有高达10份样品有农残检出,占耿马县所测全部样品的33.33%,其余区、县仅临翔区2份、云县1份样品有农残检出。在监测的19种农药残留中,仅检出联苯菊酯、氯氟氰菊酯2项拟除虫菊酯类农药,而有机氯类、有机磷类农药均未检出。
In order to investigate the situation and pollution level of pesticide residues in tea samples sold in Lincang city,19 pesticide residues in 309 tea samples sold in Lincang city(1 district and 7 counties)were quantitatively analyzed by gas chromatography-mass spectrometry(GC-MS).The results showed that 13 tea samples in the 309 tea samples were positive for pesticide residues,the detection rate was 4.21%,and the qualification rate was 100%.Among them,up to 10 samples were detected in Gengma County,accounting for 33.33% of all tea samples detected in Gengma county,and only 2 samples in Linxiang district and 1 sample in Yunxian county were detected in other districts and counties.Among the 19 pesticide residues monitored,only 2 pyrethroid pesticides of bifenthrin and cyhalothrin were detected,while the organochlorine and organophosphorus pesticides were not detected.
作者
罗正飞
周李红
沈琪
龚正礼
LUO Zheng-fei;ZHOU Li-hong;SHEN Qi;GONG Zheng-li(West Yunnan Normal University of Science and Technology,Lincang 677600,China;Lincang No.1 Middle School,Lincang 677600,China;Southwest University,Chongqing 400716,China)
出处
《茶叶通讯》
北大核心
2020年第3期485-490,共6页
Journal of Tea Communication
基金
云南省科技人才和平台计划(工程技术研究中心建设)
云南省红茶工程技术研究中心(2018DH011)。
关键词
茶叶
农药残留
气相色谱-串联质谱法
临沧市
Tea
Pesticide residues
Gas chromatography-mass spectrometry
Lincang city
