Abstract：
:A new separation and pre-concentration method for spectrophotometric determination of glyphosate herbicide was developed. Glyphosate was converted into dithiocarbamic acid with CS2, followed by copper in the presence of ammonia to promote complex formation. This complex was collected in a CH2Cl2 organic drop and absorbance measured at 435nm. The analytical parameters, such as the amount of NH3, Cu(II) and CS2, type of extraction solutions, and the ratio of dispersive and organic liquids were optimized. The calibration curve was linear in the range 0.5-10mgl-1. The limits of detection and quantification were calculated from 3s to 10s criterions as 0.21mgl-1 and 0.70mgl-1, respectively. The developed method was applied to legume samples with the satisfactory recovery values of 98±4-102±3%.
journal_name
Food Chemjournal_title
Food chemistryauthors
Çetin E,Şahan S,Ülgen A,Şahin Udoi
10.1016/j.foodchem.2017.03.063subject
Has Abstractpub_date
2017-09-01 00:00:00pages
567-571eissn
0308-8146issn
1873-7072pii
S0308-8146(17)30445-4journal_volume
230pub_type
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