Zhao Fangfang, Liu Jingkun, Xie Defang, Lv Daizhu, Luo Jinhui
Analysis & Testing Center, Chinese Academy of Tropical Agricultural Sciences Haikou Hainan 571101 China
Laboratory of Quality & Safety Risk Assessment for Tropical Products(Haikou), Ministry of Agriculture Haikou Hainan 571101 China.
RSC Adv. 2018 Feb 26;8(16):8671-8677. doi: 10.1039/c8ra00251g. eCollection 2018 Feb 23.
To supply actual data for assessing the potential threat from difenoconazole to the ecosystem, its practical environmental behaviors in a mango field were investigated through a novel mode. After optimization, a UPLC-MS/MS determination method with good accuracy and stability was developed that could be used for the residue determination. Difenoconazole residue was sampled, and its degradation and transportation activity, which reflected the actual transfer characteristics in the natural environment, were researched. The results showed that the half-life of difenoconazole in the soil was 15.4 days, which may be accumulated in a year-round agricultural production system. The residue was detected in the rain settled underground, which showed that the residue transported gradually with the rainfall in vertical and horizontal directions. The results showed that difenoconazole would transport with the rainfall, although the process was slow. All the data showed that the soil ecosystem, and probably also the aquatic ecosystem, would be affected by difenoconazole residue.
为提供实际数据以评估苯醚甲环唑对生态系统的潜在威胁，通过一种新颖的方式对其在芒果园中的实际环境行为进行了研究。经过优化，建立了一种具有良好准确性和稳定性的超高效液相色谱-串联质谱测定方法，可用于残留量测定。对苯醚甲环唑残留进行了采样，并研究了其反映在自然环境中实际迁移特征的降解和迁移活性。结果表明，苯醚甲环唑在土壤中的半衰期为15.4天，在全年农业生产系统中可能会积累。在地下沉降雨水中检测到了残留，这表明残留会随着降雨在垂直和水平方向逐渐迁移。结果表明，苯醚甲环唑会随着降雨迁移，尽管这个过程很缓慢。所有数据表明，土壤生态系统以及可能的水生生态系统都会受到苯醚甲环唑残留的影响。
