Chemiluminescence determination of o-chlorobenzylidenemalonic acid dinitrile in extracts

Druzhinin, A. A.; Kaurov, N. E.; Немков, А. С.; Ishutin, V. A.

doi:10.1134/s1061934810120075

Cited by 1 publication

(2 citation statements)

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“…Concerning the fact that Ellman's reagent is highly sensitive to reduction substances 20 , sulphides, sulphites and thiols proved to have the highest interference recorded. On the other hand, the method proved to be highly resilient against the interference of commonly used riot control agents chloroacetophenone (CN) and dibenz[b,f] [1,4]oxazepine (CR). The list of the selected interferences is given in the Table 1.…”

Section: Interferencementioning

confidence: 99%

“…CS analysis is important in the fields of NBC individual protection, hygiene, the quality of environment or forensic sciences. A lot of instrumental methods have been described concerning this purpose, for example chemiluminescence 4 , IR spectrometry 5 , gas chromatography in the combination with various detectors [6][7][8] or liquid chromatography 9 . Concerning military practice (chemical reconnaissance and chemical control), an important role is also played by colorimetric and spectrophotometric methods using colouring reactions with various reagents 10 .…”

Section: Introductionmentioning

confidence: 99%

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ELLMAN'S REAGENT FOR ANALYSIS OF o-CHLOROBENZYLIDENE MALONONITRILE (CS RIOT CONTROL AGENT) IN SOLID SAMPLES

Pitschmann

Matějovský

Kobliha

2018

J. Chil. Chem. Soc.

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We propose a new method of spectrophotometric determination of o-chlorobenzylidene malononitrile (CS riot control agent) in solid samples of various origins and compositions (soil, brickwork, silica gel, glass wool). The method is based on colouring reaction of malononitrile with Ellman's reagent in the presence of ammonium acetate as a catalyst. The reaction proceeds in a non-aqueous medium. The analysis takes place in an aprotic solvent N,N-dimethylformamide, which is also an extraction reagent. A detection limit is 0.18 μg mL-1 , calibration curve is linear in the range of 0.34-10.20 μg mL-1. The method is suitable for an analysis in laboratory as well as in field conditions.

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Section: Interferencementioning

confidence: 99%