Spectrophotometric determination of methomyl residues in selected vegetables, grains, and soil.
作者信息
Rangaswamy J R, Prakash S R, Vijayashankar Y N
出版信息
J Assoc Off Anal Chem. 1977 Sep;60(5):1093-6.
PMID:893329
Abstract
Methomyl (S-methyl-N-[(methylcarbamoyl) oxy] thioacetimidate) is converted to oxime and hydroxylamine by alkali and acid treatment, respectively. Hydroxylamine is oxidized with iodine in the presence of sulfanilic acid to yield p-diazoniumbenzenesulfonic acid which is coupled with alpha-naphthylamine to form a crimson p-benzenesulfonic acid-azo-alpha-naphthylamine with an absorption maximum at 520 nm. The relationship between absorbance and concentration of methomyl is linear in the range 0.5-10 microgram. The method is sensitive and specific; 0.625 ppm methomyl can be determined in a 40 g sample of selected vegetables, grains, and soil.
摘要
相似文献
1
Spectrophotometric determination of methomyl residues in selected vegetables, grains, and soil.
J Assoc Off Anal Chem. 1977 Sep;60(5):1093-6.
2
Disappearance of dislodgable residues of methomyl from leaves and vegetables in Tamilnadu (India).
Int J Environ Anal Chem. 1985;23(1-2):69-75. doi: 10.1080/03067318508076435.
3
Determination of residues of methomyl and oxamyl and their oximes in crops by gas-liquid chromatography of oxime trimethylsilyl ethers.通过肟三甲基硅烷基醚的气液色谱法测定作物中甲胺磷和氧乐果及其肟的残留量。
J Chromatogr. 1979 Apr 1;171:249-62. doi: 10.1016/s0021-9673(01)95304-x.
4
A novel inhibitory kinetic fluorimetric method for the determination of trace methomyl in environmental samples.一种用于测定环境样品中痕量灭多威的新型抑制动力学荧光法。
Luminescence. 2009 Jul-Aug;24(4):266-70. doi: 10.1002/bio.1120.
5
A simple spectrophotometric method for the determination of carbofuran residues.一种测定克百威残留量的简易分光光度法。
J Assoc Off Anal Chem. 1976 Nov;59(6):1276-8.
6
Degradation of methomyl residues in frozen strawberries.
J Assoc Off Anal Chem. 1981 Sep;64(5):1211-5.
7
High pressure liquid chromatographic determination of methomyl and oxamyl on vegetable crops.
J Assoc Off Anal Chem. 1978 Jan;61(1):15-7.
8
Influence of various solvent-water mixtures on the extraction of dieldrin and methomyl residues from radishes.各种溶剂 - 水混合物对从萝卜中提取狄氏剂和灭多威残留量的影响。
J Assoc Off Anal Chem. 1982 Sep;65(5):1112-7.
9
Degradation dynamics and persistence of Quinolphos and Methomyl in/on Okra (Ablemoschus esculentus) fruits and cropped soil.喹硫磷和灭多威在秋葵（黄秋葵）果实及种植土壤中的降解动态和残留情况
Bull Environ Contam Toxicol. 2008 Jan;80(1):74-7. doi: 10.1007/s00128-007-9319-z. Epub 2007 Dec 6.
10
Determination and identification of S-methyl N-[(methylcarbamoy)oxy]thioacetimidate (methomyl) residues in tobacco.烟草中S-甲基N-[(甲基氨基甲酰基)氧基]硫代乙脒（灭多威）残留量的测定与鉴定
J Agric Food Chem. 1975 Jul-Aug;23(4):695-8. doi: 10.1021/jf60200a039.
Zotero 插件