Mi. Evgenev et al., METHODS FOR VISUAL, SPECTROPHOTOMETRIC, AND CHROMATOGRAPHIC DETERMINATION OF AMINO-COMPOUNDS IN AIR AND AQUEOUS-MEDIA, Journal of analytical chemistry, 53(2), 1998, pp. 154-164
The conditions were found for using chlorodinitro derivatives of benz-
2, 1,3-oxadiazole as chromogenic reagents in indicator tubes, test str
ips, and the indicator system of a GSP-11 gas-warning device for visua
l, spectrophotometric, and chromatographic determination of amino comp
ounds in air and aqueous media.