主题：【求助】请问有测Iprodione异菌脲和Fomesafen氟磺胺草醚的吗

文献上的离子试过了，没有找到呀。

Iprodione
ESI +  330>101 330>143 330>245
ESI -  228>141


Fomesafen
ESI + 456>344 456>223
ESI - 437>195 437>286

试一下这个。

补充一下：我们是用甲醇：水，添加了醋酸铵。

日本厚生劳动省食品中残留农药兽药饲料添加剂检测方法中提供的氟磺胺草醚定量离子为-473、定性离子为-195。    　    　    　    　    　   

楼主，你好！您可以先用版友noon给的正负离子测定一次看看结果怎么样？

再顶一次，版友noon给的离子不太准确。有些离子直接没峰。

再悬赏一个月，3月底结贴。有知道的请帮帮忙。
再悬赏一个月，3月底结贴。有知道的请帮帮忙。

Fomesafen ESI - MRM （m/z) 437＞195
全文链接
http://www.jstage.jst.go.jp/article/shokueishi/49/3/211/_pdf/-char/ja/

另一种

http://www.rsc.org/Publishing/Journals/AN/article.asp?doi=b312236k

Paper
Analyst, 2004, 129, 38 - 44, DOI: 10.1039/b312236k

Liquid chromatography and tandem mass spectrometry: a powerful approach for the sensitive and rapid multiclass determination of pesticides and transformation products in water

Juan V. Sancho, Oscar J. Pozo and Félix Hernández

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In this paper we will show the results of our research on the direct simultaneous determination of multi-class pesticides and transformation products with different polarities and acid–base properties by applying an on-line trace enrichment coupled to the chromatographic system supplied with electrospray interface (SPE-LC-MS/MS method). The specific chromatographic separation allows the correct determination of almost fifty compounds (37 pesticides and 10 transformation products) using very low sample volume and very little sample handling. Recoveries between 70–120% were obtained for all compounds in drinking and groundwater, meanwhile in surface water 44 compounds were correctly quantified. Relative standard deviations lower than 15% were obtained for all compounds. Even at the lowest concentration level tested (25 ng L–1) 40 compounds presented satisfactory recoveries and repeatability. The use of methanol as organic modifier and the increase of injection volume are also studied. The applicability of the developed