| 茶园唑虫酰胺残留动态与使用安全性 |
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| 引用本文： | 曾明森,;刘丰静,;黄伙水,;王定锋,;荣杰峰,;吴光远.茶园唑虫酰胺残留动态与使用安全性[J].福建省农科院学报,2014(8):774-778. |
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| 作者姓名： | 曾明森 ;刘丰静 ;黄伙水 ;王定锋 ;荣杰峰 ;吴光远 |
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| 作者单位： | [1]福建省农业科学院茶叶研究所,福建福安355015; [2]泉州出入境检验检疫综合局技术服务中心,福建泉州362000 |
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| 基金项目： | 福建省财政专项---福建省农业科学院科技创新团队建设项目（CXTD-1-1302）;国家茶叶产业技术体系（CARS-23）;国家星火计划重大项目（2013GA7200025） |
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| 摘 要： | 为探讨唑虫酰胺茶园使用安全性，在福安福云6号绿茶品种茶园开展残留消解动态试验。结果表明，在54～270 g · hm-2施用剂量下，原始附着量和原始残留量随施用剂量的提高线性增加，烘干不能使残留消解；在108、162、216 g · hm -2等推荐使用剂量下，5月份时唑虫酰胺在茶树上的原始残留量高达33.73～67.58 mg · kg -1，降解速度较慢，药后10 d的残留量方低于20 mg · kg -1；在茶园的消解规律符合一级动力学方程，半衰期长达4.02～5.00 d；同一使用剂量在不同季节施药后的残留量有较大差异，9月份的原始残留量显著高于5月份。研究认为唑虫酰胺在茶园使用的食品安全性较低，对于国内市场，建议在茶叶上的残留限量暂定为20 mg · kg -1，安全间隔期15 d。
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| 关 键 词： | 唑虫酰胺 茶叶 农药残留 消解动态 安全性 |
Residue and Safety of Tolfenpyrad Used in Tea Plantations |
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| Institution: | ZENG Ming-sen, LIU Feng-jing, HUANG Huo-shui, WANG Ding-feng, RONG Jie-feng, WU Guang-yuan (1. TeaResearch Institute, FujianAcademyofAgricultural Sciences, Fdan, Fujian 355015, China; 2. Quanzhou Entry-Exit Inspection ＆ Quarantine Bureau, Quanzhou, Fujian 362000, China) |
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| Abstract: | Degradation dynamics and food safety of residual Tolfenpyrad in the tea ,Fuyun 6 （Camellia sinensis ） , were studied in a field test in Fu′an ,Fujian . The results showed that the residue concentrations in both fresh and baked tea leaves increased linearly with Tolfenpyrad applications in the concentrations of 54 -270 g · hm-2 ,and that the residues did not degrade significantly during the baking process . When the recommended application concentrations of Tolfenpyrad at 108 ,162 ,or 216 g · hm -2 for the month of May was applied ,the initial residues ranged from 33.73 mg · kg -1 to 67.58 mg · kg -1 ,and reduced to 20 mg · kg -1 after 10 days . It fitted the first-order kinetics ,with a T1/2 ranging from 4.02 d to 5.00 d . The residue level in teas was found significantly lower in May than September during a year . The current safe application requirement on Tolfenpyrad was low . For the domestic market ,the MRL was recommended to be 20 mg · kg -1 ,and a pre-harvest time ,15 d . |
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| Keywords: | Tolfenpyrad tea pesticide residues degradation dynamics safety |
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