1.浙江省植保检疫与农药管理总站,浙江 杭州 310020
2.中国农业科学院茶叶研究所,茶树种质创新与资源利用全国重点实验室,浙江 杭州 310008
3.天津农学院 园艺园林学院,天津 300384
4.杭州华谱农业科技有限公司,浙江 杭州 310008
5.浙江省农业科学研究院农产品质量安全与营养研究所, 农产品质量安全全国重点实验室,浙江 杭州 310022
崔新仪,博士,副教授,研究方向:农产品质量安全与植物保护研究,E-mail:xycui@tjau.edu.cn
张新忠,博士,研究员,研究方向:农产品质量安全与植物保护研究,E-mail:zxz.1982@163.com
收稿:2026-02-10,
修回:2026-04-13,
录用:2026-04-13,
网络首发:2026-04-30,
纸质出版:2026-06-15
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严铁,赵炎,王亚如,王雅琪,王祥云,罗逢健,王敏,崔新仪,张新忠.超高效液相色谱-串联质谱法测定铁皮石斛中氯氟醚菌唑及其4种代谢物残留[J].分析测试学报,2026,45(06):1-9.
YAN Tie,ZHAO Yan,WANG Ya-ru,WANG Ya-qi,WANG Xiang-yun,LUO Feng-jian,WANG Min,CUI Xin-yi,ZHANG Xin-zhong.Residue Analysis of Mefentrifluconazole and Its Four Metabolites in Dendrobium officinale by Ultra Performance Liquid Chromatography-Tandem Mass Spectrometry[J].Journal of Instrumental Analysis,2026,45(06):1-9.
严铁,赵炎,王亚如,王雅琪,王祥云,罗逢健,王敏,崔新仪,张新忠.超高效液相色谱-串联质谱法测定铁皮石斛中氯氟醚菌唑及其4种代谢物残留[J].分析测试学报,2026,45(06):1-9. DOI: 10.12452/j.fxcsxb.26021004.
YAN Tie,ZHAO Yan,WANG Ya-ru,WANG Ya-qi,WANG Xiang-yun,LUO Feng-jian,WANG Min,CUI Xin-yi,ZHANG Xin-zhong.Residue Analysis of Mefentrifluconazole and Its Four Metabolites in Dendrobium officinale by Ultra Performance Liquid Chromatography-Tandem Mass Spectrometry[J].Journal of Instrumental Analysis,2026,45(06):1-9. DOI: 10.12452/j.fxcsxb.26021004.
通过比较不同提取溶剂、净化填料组合及定容溶剂比例的色谱响应差异,建立了铁皮石斛鲜叶和鲜茎中氯氟醚菌唑及其4种代谢物(1,2,4-三氮唑、三唑乙酸、三唑丙氨酸和三唑丙酸)的残留分析方法,并成功用于田间实际样品检测。样品经2%甲酸乙腈提取,盐析处理后,采用C
18
、GCB与MgSO
4
混合填料净化过滤,浓缩近干后用乙腈-5 mmol/L乙酸铵水溶液(体积比1∶1)
定容,通过HSS T
3
色谱柱实现目标物分离,采用超高效液相色谱-串联质谱法(UPLC-MS/MS)检测,基质外标法定量。结果显示:氯氟醚菌唑在0.005~2 mg/L、代谢物在0.05~5 mg/L范围内,不同基质标准曲线的相关系数(
r
2
)均不小于0.991 0;低、中、高3个添加水平下,平均回收率为73.1%~107%,相对标准偏差(RSD)为1.9%~10%;除4种代谢物在鲜茎中的定量下限(LOQ)为0.1 mg/kg外,其余LOQ均为0.01 mg/kg。大棚试验中,铁皮石斛喷施400 g/L氯氟醚菌唑·吡唑醚菌酯悬浮剂后,氯氟醚菌唑在鲜叶和鲜茎中消解均符合方程
C
=69.641 7e
-0.093
t
(
r
2
=0.983 2,半衰期7.45 d)和
C
=30.864 63e
-0.052
t
(
r
2
=0.905 3,半衰期13.33 d)。该方法准确、灵敏、可靠,满足残留分析的技术要求,可用于铁皮石斛实际样品中氯氟醚菌唑及其代谢物的残留检测。
In this study,a validated residue analysis method was established for the simultaneous determination of mefentrifluconazole and its four primary metabolites(1,2,4-triazole,triazoleacetic acid,ttriazolealanine,and triazolepropionic acid) in fresh leaves and stems of
Dendrobium officinale.
Method optimization involved systematic comparison of extraction solvents,purification sorbent combinations,and chromatographic responses of reconstitution solvents. The optimized procedure was successfully applied to field samples,verifying its practical applicability. Specifically,samples were extracted with 2% formic acid-acetonitrile solution,followed by salting-out phase separation,purified using a mixed sorbent(C
18
,GCB,and MgSO₄),filtered,concentrated to near dryness,and reconstituted in acetonitrile-5 mmol/L ammonium acetate solution (1∶1,volume ratio) for instrumental analysis. Separation was achieved on a HSS T
3
column,and quantification was performed via ultra performance liquid chromatography- tandem mass spectrometry(UPLC-MS/MS) using the matrix-matched external standard method. For matrix-matched standards,the linear correlation coefficients(
r
²) of mefentrifluconazole at 0.005-2 mg/L and its metabolites at 0.05-5 mg/L all exceeded 0.991 0. At three spiked levels(low,medium,high),av
erage recoveries ranged from 73.1% to 107%,with relative standard deviations(RSDs) of 1.9%-10%,and the limits of quantification(LOQs) were 0.01 mg/kg except for the four metabolites in fresh stems(0.10 mg/kg). After greenhouse application of 400 g/L mefentrifluconazole·pyraclostrobin suspension concentrate on
Dendrobium officinale
,the dissipation of mefentrifluconazole in fresh leaves and stems followed first-order kinetics,with regression equations of
C
=69.641 7e
-0.093
t
(
r
2
=0.983 2,half-life=7.45 days) and
C
=30.864 63e
-0.052
t
(
r
2
=0.905 3,half-life=13.33 days),respectively. These results confirm that the developed method is accurate,sensitive,and reliable for routine residue analysis,and can be effectively utilized for the real sample determination of mefentrifluconazole and its metabolites in
Dendrobium officinale
.
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