Selective enrichment of the degradation products of organophosphorus nerve agents by zirconia based solid-phase extraction

2011 ◽  
Vol 1218 (38) ◽  
pp. 6612-6620 ◽  
Author(s):  
Pankaj K. Kanaujia ◽  
Deepak Pardasani ◽  
Vijay Tak ◽  
Ajay K. Purohit ◽  
D.K. Dubey
Keyword(s):  
Solid Phase Extraction ◽  
Solid Phase ◽  
Degradation Products ◽  
Nerve Agents ◽  
Phase Extraction ◽  
Selective Enrichment ◽  
Organophosphorus Nerve Agents

scholarly journals Novel Chromatographic Separation and Carbon Solid-Phase Extraction of Acetanilide Herbicide Degradation Products

2002 ◽  
Vol 85 (6) ◽  
pp. 1331-1337 ◽  
Author(s):  
Jody A Shoemaker
Keyword(s):  
Drinking Water ◽  
Solid Phase Extraction ◽  
Chromatographic Separation ◽  
Solid Phase ◽  
Degradation Products ◽  
The United States ◽  
Negative Ion ◽  
Phase Extraction ◽  
Herbicide Degradation ◽  
Relative Standard

Abstract One acetamide and 5 acetanilide herbicides are currently registered for use in the United States. Over the past several years, ethanesulfonic acid (ESA) and oxanilic acid (OA) degradation products of these acetanilide/acetamide herbicides have been found in U.S. ground waters and surface waters. Alachlor ESA and other acetanilide degradation products are listed on the U.S. Environmental Protection Agency's (EPA) 1998 Drinking Water Contaminant Candidate List. Consequently, EPA is interested in obtaining national occurrence data for these contaminants in drinking water. EPA currently does not have a method for determining these acetanilide degradation products in drinking water; therefore, a research method is being developed using liquid chromatography/negative ion electrospray/mass spectrometry with solid-phase extraction (SPE). A novel chromatographic separation of the acetochlor/alachlor ESA and OA structural isomers was developed which uses an ammonium acetate–methanol gradient combined with heating the analytical column to 70°C. Twelve acetanilide degradates were extracted by SPE from 100 mL water samples using carbon cartridges with mean recoveries >90% and relative standard deviations ≤16%.

Metal–organic frameworks@graphene hybrid aerogels for solid-phase extraction of non-steroidal anti-inflammatory drugs and selective enrichment of proteins

The Analyst ◽  
2016 ◽  
Vol 141 (13) ◽  
pp. 4219-4226 ◽  
Author(s):  
Xiaoqiong Zhang ◽  
Qionglin Liang ◽  
Qiang Han ◽  
Wei Wan ◽  
Mingyu Ding
Keyword(s):  
Solid Phase Extraction ◽  
Solid Phase ◽  
Metal Organic Frameworks ◽  
Phase Extraction ◽  
Selective Enrichment ◽  
Metal Organic ◽  
Inflammatory Drugs ◽  
Anti Inflammatory ◽  
Hybrid Aerogels

MOFs@graphene hybrid aerogels were synthesized and used as efficient adsorbents for the extraction of drugs and selective enrichment of proteins.

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