【求助】求麦草畏（DICAMA)英文分析方法，谢谢！

什么的分析方法？活性成分？还是残留？
残留的话，在作物上，水，土壤还是空气中的？
请明确求助内容

Determination of commonly used polar herbicides in agricultural drainage waters in Australia by HPLC

Abstract
The present study describes the application of different extraction techniques for the preconcentration of ten commonly found acidic and non-acidic polar herbicides (2,4-D, atrazine, bensulfuron-methyl, clomazone, dicamba, diuron, MCPA, metolachlor, simazine and triclopyr) in the aqueous environment. Liquid–liquid extraction (LLE) with dichloromethane, solid-phase extraction (SPE) using Oasis HLB cartridges or SBD-XC EmporeTM disks were compared for extraction efficiency of these herbicides in different matrices, especially water samples from contaminated agricultural drainage water containing high concentrations of particulate matter. Herbicides were separated and quantified by high performance liquid chromatography (HPLC) with an ultraviolet detector. SPE using SDB-XC EmporeTM disks was applied to determine target herbicides in the Murrumbidgee Irrigation Area (NSW, Australia) during a two-week survey from October 2005 to November 2005. The daily aqueous concentrations of herbicides from 24-h composite samples detected at two sites increased after run-off from a storm event and were in the range of: 0.1–17.8 lg l1, <0.1–0.9 lg l1 and 0.2–17.8 lgl1 at site 1; <0.1–3.5 lg l1, <0.1–0.2 lgl1 and <0.2–3.2 lg l1 at site 2 for simazine, atrazine and diuron, respectively.

Determination of commonly used polar herbicides in agricultural drainage waters in Australia by HPLC

On-fibre silylation following solid-phase microextraction for the determination of acidic herbicides in water samples by gas chromatography

Abstract
In this work a solid-phase microextraction (SPME) method for the determination of eight phenoxy acid herbicides and dicamba in water
samples has been developed. Analytes are concentrated on a SPME fibre, on-fibre silylated using N-methyl-N-(tert-butyldimethylsilyl)-
trifluoroacetamide (MTBSTFA), and determined by gas chromatography with mass spectrometry detection (GC–MS). Influence of microextraction and derivatization conditions on the performance of the developed method are systematically evaluated. The highest enrichment factors were achieved using a polar polyacrylate (PA) fibre directly exposed to the stirred sample. Sample acidification and addition of sodium chloride improved the yield of the extraction step; however, the last factor increased the variability of the method. After the microextraction step, derivatization was carried out by exposing the SPME fibre to the headspace of a vial containing 50
l of MTBSTFA. The on-fibre silylation reaction was completed in 10 min without need of temperature control. Quantification limits from 0.004 to 0.030 ng/ml were obtained for all compounds using an extraction step of 40 min. The proposed method showed and excellent linearity in the concentration range from 0.1 to 10 ng/ml. Repeatability was evaluated using spiked samples at different concentration levels, relative standard deviations from 4 to 12% were achieved. The yield of the whole procedure was scarcely affected by the type of water sample and the presence of relatively high levels of humic acids.

On-fibre silylation following solid-phase microextraction

楼主，以上两篇文献中有关于麦草畏（dicamba）的检测的，不过是多种农药的检测，您看看是否能用？

应助达人

Environmental Chemistry Methods: Dicamba and DCSA