浙江农业学报 ›› 2023, Vol. 35 ›› Issue (4): 942-951.DOI: 10.3969/j.issn.1004-1524.2023.04.21
张春荣(), 郭钤, 孔丽萍, 吴园园, 林琴, 许振岚, 赵学平, 汤涛(
)
收稿日期:
2021-12-31
出版日期:
2023-04-25
发布日期:
2023-05-05
通讯作者:
*汤涛,E-mail:tangtao80@126.com
作者简介:
张春荣(1970—),女,河南温县人,硕士,副研究员,研究方向为农药风险评估。E-mail:crzhang001@126.com
基金资助:
ZHANG Chunrong(), GUO Qian, KONG Liping, WU Yuanyuan, LIN Qin, XU Zhenlan, ZHAO Xueping, TANG Tao(
)
Received:
2021-12-31
Online:
2023-04-25
Published:
2023-05-05
摘要:
建立嘧菌酯在杨梅中的残留分析方法,考察嘧菌酯在杨梅中的储藏稳定性,通过开展50%嘧菌酯水分散粒剂在杨梅树上1年(2018年)6地的田间试验,明确嘧菌酯在杨梅上的残留特征及膳食风险。杨梅样品中嘧菌酯经乙腈提取,碱性氧化铝净化,超高效液相色谱-串联质谱(UPLC-MS/MS)检测,外标法定量。结果表明,在 0.001~0.05 mg·L-1 范围内,嘧菌酯在溶剂及基质中的峰面积与其对应的质量浓度间线性关系均良好,R2≥0.999 1。当添加质量分数为0.01~30.0 mg·kg-1时,嘧菌酯在杨梅中添加回收率为90%~98%,相对标准偏差(RSD)为1.8%~7.9%,定量限(LOQ)为0.01 mg·kg-1,该方法能用于检测嘧菌酯在杨梅中的残留量。杨梅中嘧菌酯在冷冻储藏条件下较为稳定,在≤-18 ℃储藏条件下杨梅样品储藏650 d,其降解率低于14.3%。田间试验结果表明,嘧菌酯在杨梅上降解较快,其消解符合一级动力学方程,半衰期为2.2~5.0 d。按照300 mg·kg-1 (制剂用药量:1 667倍液)对杨梅树施用50%嘧菌酯水分散粒剂2次,施药间隔10 d,最后一次施药后20、25、30 d,杨梅中嘧菌酯的残留量分别为0.012~0.57、<0.010~0.52、<0.010~0.28 mg·kg-1。嘧菌酯的普通人群国家估算每日摄入量(national estimated daily intake,NEDI)是6.111 4 mg,风险商(risk quotient,RQ)为48.5%,对一般人群健康风险较低。
中图分类号:
张春荣, 郭钤, 孔丽萍, 吴园园, 林琴, 许振岚, 赵学平, 汤涛. 嘧菌酯在杨梅中的残留行为及膳食暴露风险评估[J]. 浙江农业学报, 2023, 35(4): 942-951.
ZHANG Chunrong, GUO Qian, KONG Liping, WU Yuanyuan, LIN Qin, XU Zhenlan, ZHAO Xueping, TANG Tao. Residue behavior and dietary exposure risk assessment of azoxystrobin in waxberry[J]. Acta Agriculturae Zhejiangensis, 2023, 35(4): 942-951.
地点Site | 项目Item | 品种Variety | 树高Height of tree/m |
---|---|---|---|
浙江兰溪Lanxi, Zhejiang | 最终残留量/消解Final residue/Dissipation | 东魁Dongkui | 4.0 |
贵州贵阳Guiyang, Guizhou | 最终残留量/消解Final residue/Dissipation | 荸荠Biqi | 2.3 |
湖南张家界Zhangjiajie, Hunan | 最终残留量/消解Final residue/Dissipation | 乌梅Wumei | 3.0 |
云南玉溪Yuxi, Yunnan | 最终残留量Final residue | 冬葵Dongkui | 3.0~3.2 |
安徽安庆Anqing, Anhui | 最终残留量Final residue | 黑炭梅Heitanmei | 3.0 |
福建福安Fu’an, Fujian | 最终残留量Final residue | 东魁Dongkui | 2.0~2.5 |
表1 试验地信息
Table 1 The information of test sites
地点Site | 项目Item | 品种Variety | 树高Height of tree/m |
---|---|---|---|
浙江兰溪Lanxi, Zhejiang | 最终残留量/消解Final residue/Dissipation | 东魁Dongkui | 4.0 |
贵州贵阳Guiyang, Guizhou | 最终残留量/消解Final residue/Dissipation | 荸荠Biqi | 2.3 |
湖南张家界Zhangjiajie, Hunan | 最终残留量/消解Final residue/Dissipation | 乌梅Wumei | 3.0 |
云南玉溪Yuxi, Yunnan | 最终残留量Final residue | 冬葵Dongkui | 3.0~3.2 |
安徽安庆Anqing, Anhui | 最终残留量Final residue | 黑炭梅Heitanmei | 3.0 |
福建福安Fu’an, Fujian | 最终残留量Final residue | 东魁Dongkui | 2.0~2.5 |
时间 Time/min | 流速 Flow rate/ (mL·min-1) | 流动相A Mobile phase A/% | 流动相B Mobile phase B/% |
---|---|---|---|
0 1.0 2.0 3.0 4.5 | 0.25 0.25 0.25 0.25 0.25 | 50 90 90 50 50 | 50 10 10 50 50 |
表2 梯度洗脱程序
Table 2 Gradient elution procedure
时间 Time/min | 流速 Flow rate/ (mL·min-1) | 流动相A Mobile phase A/% | 流动相B Mobile phase B/% |
---|---|---|---|
0 1.0 2.0 3.0 4.5 | 0.25 0.25 0.25 0.25 0.25 | 50 90 90 50 50 | 50 10 10 50 50 |
添加水平 Spiked level/(mg·kg-1) | 回收率Recovery | 相对标准偏差 RSD | |||||
---|---|---|---|---|---|---|---|
1 | 2 | 3 | 4 | 5 | 平均值Average | ||
0.01 | 95 | 95 | 95 | 85 | 80 | 90 | 7.9 |
0.5 | 94 | 92 | 90 | 90 | 92 | 92 | 1.8 |
30 | 95 | 98 | 97 | 99 | 102 | 98 | 2.6 |
表3 嘧菌酯在杨梅基质中的添加回收率及相对标准偏差
Table 3 The recoveries and relative standard deviations of azoxystrobin in waxberry %
添加水平 Spiked level/(mg·kg-1) | 回收率Recovery | 相对标准偏差 RSD | |||||
---|---|---|---|---|---|---|---|
1 | 2 | 3 | 4 | 5 | 平均值Average | ||
0.01 | 95 | 95 | 95 | 85 | 80 | 90 | 7.9 |
0.5 | 94 | 92 | 90 | 90 | 92 | 92 | 1.8 |
30 | 95 | 98 | 97 | 99 | 102 | 98 | 2.6 |
储藏时间 Time/d | 储藏样品残留量 Residual amount of the stored analytical sample/(mg·kg-1) | 降解率 Degradation rate/% | 质控样品回收率 Recovery of the quality control sample/% | 相对标准偏差 RSD/% | ||||
---|---|---|---|---|---|---|---|---|
1 | 2 | 平均Average | 1 | 2 | 平均Average | |||
0 | 4.6 | 5.1 | 4.9 | — | 97 | 103 | 100 | 4.4 |
182 | 4.5 | 4.8 | 4.7 | 4.1 | 92 | 94 | 93 | 1.9 |
390 | 4.7 | 4.4 | 4.6 | 6.1 | 86 | 93 | 89 | 5.6 |
540 | 4.6 | 4.6 | 4.6 | 6.1 | 83 | 91 | 87 | 6.8 |
650 | 3.8 | 4.5 | 4.2 | 14.3 | 77 | 89 | 83 | 10.6 |
表4 嘧菌酯在杨梅添加样品中的储藏稳定性
Table 4 Storage stability of azoxystrobin in waxberry
储藏时间 Time/d | 储藏样品残留量 Residual amount of the stored analytical sample/(mg·kg-1) | 降解率 Degradation rate/% | 质控样品回收率 Recovery of the quality control sample/% | 相对标准偏差 RSD/% | ||||
---|---|---|---|---|---|---|---|---|
1 | 2 | 平均Average | 1 | 2 | 平均Average | |||
0 | 4.6 | 5.1 | 4.9 | — | 97 | 103 | 100 | 4.4 |
182 | 4.5 | 4.8 | 4.7 | 4.1 | 92 | 94 | 93 | 1.9 |
390 | 4.7 | 4.4 | 4.6 | 6.1 | 86 | 93 | 89 | 5.6 |
540 | 4.6 | 4.6 | 4.6 | 6.1 | 83 | 91 | 87 | 6.8 |
650 | 3.8 | 4.5 | 4.2 | 14.3 | 77 | 89 | 83 | 10.6 |
试验地点 Site | 消解方程 Dynamic equation | 原始沉积量 Initial concentration/(mg·kg-1) | 相关系数 r | 半衰期 Half-life/d |
---|---|---|---|---|
浙江兰溪Lanxi,Zhejiang | Ct=7.6602e-0.1705t | 23.4 | 0.909 8 | 4.1 |
湖南张家界Zhangjiajie,Hunan | Ct=6.5679e-0.1376t | 9.3 | 0.984 9 | 5.0 |
贵州贵阳Guiyang,Guizhou | Ct=3.4054e-0.3126t | 4.7 | 0.938 2 | 2.2 |
表5 嘧菌酯在杨梅中的消解动态
Table 5 Dissipation dynamics of azoxystrobin in waxberry
试验地点 Site | 消解方程 Dynamic equation | 原始沉积量 Initial concentration/(mg·kg-1) | 相关系数 r | 半衰期 Half-life/d |
---|---|---|---|---|
浙江兰溪Lanxi,Zhejiang | Ct=7.6602e-0.1705t | 23.4 | 0.909 8 | 4.1 |
湖南张家界Zhangjiajie,Hunan | Ct=6.5679e-0.1376t | 9.3 | 0.984 9 | 5.0 |
贵州贵阳Guiyang,Guizhou | Ct=3.4054e-0.3126t | 4.7 | 0.938 2 | 2.2 |
采收间隔期 Interval to harvest/d | 最终残留量 Terminal residue | 残留试验中值 STMR | 最高残留值 HR |
---|---|---|---|
20 | 0.012、0.017、0.032、0.039、0.21、0.28、0.29、0.30、0.33、0.34、0.38、0.57 | 0.28 | 0.57 |
25 | <0.010、<0.010、0.11、0.14、0.15、0.16、0.17、0.19、0.21、0.28、0.47、0.52 | 0.16 | 0.52 |
30 | <0.010、<0.010、<0.010、0.077、0.085、0.11、0.14、0.15、0.17、 | 0.12 | 0.28 |
0.23、0.25、0.28 |
表6 嘧菌酯在杨梅中的残留量
Table 6 The terminal residue of azoxystrobin in waxberry (n=2) mg·kg-1
采收间隔期 Interval to harvest/d | 最终残留量 Terminal residue | 残留试验中值 STMR | 最高残留值 HR |
---|---|---|---|
20 | 0.012、0.017、0.032、0.039、0.21、0.28、0.29、0.30、0.33、0.34、0.38、0.57 | 0.28 | 0.57 |
25 | <0.010、<0.010、0.11、0.14、0.15、0.16、0.17、0.19、0.21、0.28、0.47、0.52 | 0.16 | 0.52 |
30 | <0.010、<0.010、<0.010、0.077、0.085、0.11、0.14、0.15、0.17、 | 0.12 | 0.28 |
0.23、0.25、0.28 |
食物种类 Food groups | 膳食量 Food intake/kg | 参考限量或残留中值 Reference maximum residue limits or STMR | 限量来源 Source of maximum residue limits | 国家估计每 日摄入量 NEDI/mg | 日允许摄入量 Acceptable daily intake/mg | 风险商 Risk quotient /% |
---|---|---|---|---|---|---|
米及其制品Rice and their products | 0.239 9 | 1 | 中国China | 0.239 900 | ADI×63 | |
面及其制品Flour and their products | 0.138 5 | 1.5 | 中国China | 0.207 750 | ||
其他谷类Other grains | 0.023 3 | 1 | 中国China | 0.023 300 | ||
薯类Potato | 0.049 5 | 0.2 | 中国China | 0.009 900 | ||
干豆类及其制品Dried beans and their products | 0.016 0 | 0.5 | 中国China | 0.008 000 | ||
深色蔬菜Dark colored vegetables | 0.091 5 | 10 | 中国China | 0.915 000 | ||
浅色蔬菜Light colored vegetables | 0.183 7 | 20 | 中国China | 3.674 000 | ||
腌制蔬菜Pickled vegetables | 0.010 3 | — | — | — | ||
水果Fruits | 0.045 7 | 0.28 | 残留中值STMR | 0.012 800 | ||
坚果Nuts | 0.003 9 | 1 | 中国China | 0.003 900 | ||
畜禽类Livestock and poultry class | 0.079 5 | 0.07* | 中国China | 0.005 565 | ||
奶及其制品Milk and their products | 0.026 3 | 0.01* | 中国China | 0.000 263 | ||
蛋及其制品Egg and their products | 0.023 6 | 0.01* | 中国China | 0.000 236 | ||
鱼虾类Fish and shrimp | 0.030 1 | — | — | — | ||
植物油Vegetable oil | 0.032 7 | 0.5 | 中国China | 0.016 350 | ||
动物油Animal fat | 0.008 7 | — | — | — | ||
糖、淀粉Sugar, starch | 0.004 4 | 1 | 中国China | 0.004 400 | ||
食盐Salt | 0.012 0 | 30 | 中国China | 0.360 000 | ||
酱油Soy sauce | 0.009 0 | 70 | 中国China | 0.630 000 | ||
合计Total | 1.028 6 | 6.111 400 | 12.6 | 48.5 |
表7 嘧菌酯风险评估计算表
Table 7 Risk assessment for dietary residue intake of azoxystrobin
食物种类 Food groups | 膳食量 Food intake/kg | 参考限量或残留中值 Reference maximum residue limits or STMR | 限量来源 Source of maximum residue limits | 国家估计每 日摄入量 NEDI/mg | 日允许摄入量 Acceptable daily intake/mg | 风险商 Risk quotient /% |
---|---|---|---|---|---|---|
米及其制品Rice and their products | 0.239 9 | 1 | 中国China | 0.239 900 | ADI×63 | |
面及其制品Flour and their products | 0.138 5 | 1.5 | 中国China | 0.207 750 | ||
其他谷类Other grains | 0.023 3 | 1 | 中国China | 0.023 300 | ||
薯类Potato | 0.049 5 | 0.2 | 中国China | 0.009 900 | ||
干豆类及其制品Dried beans and their products | 0.016 0 | 0.5 | 中国China | 0.008 000 | ||
深色蔬菜Dark colored vegetables | 0.091 5 | 10 | 中国China | 0.915 000 | ||
浅色蔬菜Light colored vegetables | 0.183 7 | 20 | 中国China | 3.674 000 | ||
腌制蔬菜Pickled vegetables | 0.010 3 | — | — | — | ||
水果Fruits | 0.045 7 | 0.28 | 残留中值STMR | 0.012 800 | ||
坚果Nuts | 0.003 9 | 1 | 中国China | 0.003 900 | ||
畜禽类Livestock and poultry class | 0.079 5 | 0.07* | 中国China | 0.005 565 | ||
奶及其制品Milk and their products | 0.026 3 | 0.01* | 中国China | 0.000 263 | ||
蛋及其制品Egg and their products | 0.023 6 | 0.01* | 中国China | 0.000 236 | ||
鱼虾类Fish and shrimp | 0.030 1 | — | — | — | ||
植物油Vegetable oil | 0.032 7 | 0.5 | 中国China | 0.016 350 | ||
动物油Animal fat | 0.008 7 | — | — | — | ||
糖、淀粉Sugar, starch | 0.004 4 | 1 | 中国China | 0.004 400 | ||
食盐Salt | 0.012 0 | 30 | 中国China | 0.360 000 | ||
酱油Soy sauce | 0.009 0 | 70 | 中国China | 0.630 000 | ||
合计Total | 1.028 6 | 6.111 400 | 12.6 | 48.5 |
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