Pesticide residues detected in Colossoma macropomum by the modified QuEChERS and GC-MS/MS methods

Abstract

This study aimed to detect pesticides in the muscle tissue of farmed tambaqui (Colossoma macropomum), in relation to good management practices (GMP) and prophylaxis and biosecurity measures. There were 54 fish farms randomly selected from the 138 found in the Microregion of Zona da Mata, RO - Brazil, for visits and collection of epidemiological data. There were extracted 24 muscle fragments were extracted from dorsolateral portion of the tail of five specimens tambaqui per fish farming. The methods of detection and quantification of pesticide residues were modified QuEChERS and GC-MS/MS. Most fish farms are small businesses and their production areas are smaller than a rural module. These ventures are an income alternative for rural producers, this information is confirmed in percentage of 88.89% (48/54) of the rural properties visited have livestock and agriculture as their main productive activity. Water monitoring was carried out in 70.37% of fish farms. However, with frequency of two water analyzes per year. Preventive and prophylactic measures taken were performed in 30% (17/54). In addition, 7% (4/54) of fish farmers reported using sodium chloride and/or using formalin as a secondary preventive measure. It is also important to mention that there was a report of administration of potassium permanganate in a fish farm, 2% (1/54). There were 12.49% (3/54) positive for at least one pesticide. The chemical compounds found Azosxystrobin (

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改进的QuEChERS和GC-MS/MS法检测巨形巨像中农药残留

本研究旨在对养殖的大斑鲷(Colossoma macropomum)肌肉组织中的农药进行检测，并与良好管理规范(GMP)、预防和生物安全措施相关。从巴西罗罗州Zona da Mata微区发现的138个渔场中随机选择54个渔场进行访问和收集流行病学数据。每个养殖场共从5条坦巴鱼尾部背外侧提取24块肌肉碎片。农药残留的检测和定量方法分别为改进的QuEChERS和GC-MS/MS。大多数养鱼场都是小型企业，其生产面积小于农村模块。这些企业是农村生产者的另一种收入选择，这一信息在88.89%(48/54)的受访农村财产中得到证实，这些财产以畜牧业和农业为主要生产活动。70.37%的养鱼场开展了水质监测。然而，以每年两次水分析的频率。采取预防和预防措施的占30%(17/54)。此外，7%(4/54)的养鱼户报告使用氯化钠和/或福尔马林作为二级预防措施。同样重要的是，有一份报告称，在一个养鱼场施用高锰酸钾，2%(1/54)。至少1种农药阳性检出率为12.49%(3/54)。化合物中发现偶氮虫胺(LOQ)、环氧康唑(LOQ)和毒死蜱(LOQ)。在坦巴蚊肌肉组织样本中检测到的氮唑虫胺、环氧康唑和毒死蜱的含量超过了PNCRC的可接受限度。

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