Dissipation Kinetics of Trinexapac Acid in Paddy Leaves, Grain, Straw and Soil Using Liquid Chromatography Tandem Mass Spectrometry.

IF 2.7 4区 环境科学与生态学 Q3 ENVIRONMENTAL SCIENCES
Amit Kumar, Pushpinder Kaur Brar, Kousik Mandal, Smriti Sharma
{"title":"Dissipation Kinetics of Trinexapac Acid in Paddy Leaves, Grain, Straw and Soil Using Liquid Chromatography Tandem Mass Spectrometry.","authors":"Amit Kumar, Pushpinder Kaur Brar, Kousik Mandal, Smriti Sharma","doi":"10.1007/s00128-024-03977-9","DOIUrl":null,"url":null,"abstract":"<p><p>Field experiments were conducted to investigate the dissipation and persistence residues of trinexapac acid in paddy crop. The treatments consisted of one control and two different concentrations of Trinexapac-ethyl 25% EC (Emulsifiable concentrate) at 30 and 60 g a.i. ha<sup>- 1</sup>(recommended and double the recommended dose). Leaf samples were collected at random in each plot separately at 0, 1, 3, 5, 7, 10 and 15 days after foliar application and grain, straw and soil samples were collected at harvest. The mean recovery of trinexapac acid (@ 0.01, 0.05 and 0.1 mg kg<sup>- 1</sup> was more than 75%. At application rate of 30 and 60 g a.i. ha<sup>- 1</sup> (gram of active ingredient per hectare), initial trinexapac acid residues on leaves were 0.29 and 0.44 mg kg<sup>- 1</sup>, respectively. Residues were observed even after 15 days of spray. At harvest time, the residues of trinexapac acid in grains were below LOQ (limit of quantification) at 30 g a.i. ha<sup>- 1</sup> treatment whereas, at 60 g a.i.ha<sup>- 1</sup>, the residues were found to be 0.02 mg kg<sup>- 1</sup>. In straw, trinexapac acid residues were detected to be 0.05 and 0.08 mg kg<sup>- 1</sup> at 30 and 60 g a.i. ha<sup>- 1</sup> treatments, respectively. The soil samples showed 0.04 and 0.08 mg kg<sup>- 1</sup> residue at 30 and 60 g a.i. ha<sup>- 1</sup>, respectively. The half life calculated for trinexapac acid came to be 10.10 and 9.09 days revealed the slow dissipation of trinexapac acid in paddy crop. The residue of trinexapac acid reached below LOQ at harvest time. Therefore the recommend dose of trinexapac ethyl is considered safe from consumption point of view.</p>","PeriodicalId":501,"journal":{"name":"Bulletin of Environmental Contamination and Toxicology","volume":"114 1","pages":"7"},"PeriodicalIF":2.7000,"publicationDate":"2024-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Bulletin of Environmental Contamination and Toxicology","FirstCategoryId":"93","ListUrlMain":"https://doi.org/10.1007/s00128-024-03977-9","RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"ENVIRONMENTAL SCIENCES","Score":null,"Total":0}
引用次数: 0

Abstract

Field experiments were conducted to investigate the dissipation and persistence residues of trinexapac acid in paddy crop. The treatments consisted of one control and two different concentrations of Trinexapac-ethyl 25% EC (Emulsifiable concentrate) at 30 and 60 g a.i. ha- 1(recommended and double the recommended dose). Leaf samples were collected at random in each plot separately at 0, 1, 3, 5, 7, 10 and 15 days after foliar application and grain, straw and soil samples were collected at harvest. The mean recovery of trinexapac acid (@ 0.01, 0.05 and 0.1 mg kg- 1 was more than 75%. At application rate of 30 and 60 g a.i. ha- 1 (gram of active ingredient per hectare), initial trinexapac acid residues on leaves were 0.29 and 0.44 mg kg- 1, respectively. Residues were observed even after 15 days of spray. At harvest time, the residues of trinexapac acid in grains were below LOQ (limit of quantification) at 30 g a.i. ha- 1 treatment whereas, at 60 g a.i.ha- 1, the residues were found to be 0.02 mg kg- 1. In straw, trinexapac acid residues were detected to be 0.05 and 0.08 mg kg- 1 at 30 and 60 g a.i. ha- 1 treatments, respectively. The soil samples showed 0.04 and 0.08 mg kg- 1 residue at 30 and 60 g a.i. ha- 1, respectively. The half life calculated for trinexapac acid came to be 10.10 and 9.09 days revealed the slow dissipation of trinexapac acid in paddy crop. The residue of trinexapac acid reached below LOQ at harvest time. Therefore the recommend dose of trinexapac ethyl is considered safe from consumption point of view.

Trinexapac酸在水稻叶片、谷物、秸秆和土壤中的耗散动力学
通过田间试验研究了三外帕酸在水稻作物中的耗散和滞留残留量。处理包括一个对照和两种不同浓度的Trinexapac-ethyl - 25% EC(可乳化浓缩物),30和60 g a.i. ha- 1(推荐剂量和推荐剂量的两倍)。分别于施叶后0、1、3、5、7、10和15 d在每个小区随机采集叶片样品,收获时采集籽粒、秸秆和土壤样品。trinexapac酸(@ 0.01、0.05和0.1 mg kg- 1)的平均回收率均大于75%。施用30和60 g a.i. ha- 1(每公顷有效成分克数)时,三酸在叶片上的初始残留量分别为0.29和0.44 mg kg- 1。喷施15天后仍有残留。收获时,30 g a.i.ha- 1处理籽粒中三酸的残留量低于定量限,而60 g a.i.ha- 1处理籽粒中三酸的残留量为0.02 mg kg- 1。在30和60 g a.i. ha- 1处理下,秸秆中三乙酸残留量分别为0.05和0.08 mg kg- 1。土壤样品在30和60 g a.i. ha- 1条件下的残留量分别为0.04和0.08 mg kg- 1。结果表明,三萜酸的半衰期分别为10.10和9.09 d,表明三萜酸在水稻作物中的耗散较慢。收获时,三乙酸残留量低于定量限。因此,从食用角度来看,trinexapac乙基的推荐剂量被认为是安全的。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
求助全文
约1分钟内获得全文 求助全文
来源期刊
CiteScore
5.60
自引率
3.70%
发文量
230
审稿时长
1.7 months
期刊介绍: The Bulletin of Environmental Contamination and Toxicology(BECT) is a peer-reviewed journal that offers rapid review and publication. Accepted submissions will be presented as clear, concise reports of current research for a readership concerned with environmental contamination and toxicology. Scientific quality and clarity are paramount.
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
copy
已复制链接
快去分享给好友吧!
我知道了
右上角分享
点击右上角分享
0
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术官方微信