Huizer H
Pharm Weekbl Sci. 1983 Oct 21;5(5):254-5. doi: 10.1007/BF02332955.
The colorimetric determination of strychnine in illicit heroin samples, based on the reduction of strychnine followed by colour development with nitrite was checked. Interference by heroin was observed, as well as a strong interference by caffeine. It was concluded that results, based on this method, are not reliable.
基于士的宁还原后用亚硝酸盐显色法对非法海洛因样品中士的宁进行比色测定的方法得到了检验。观察到海洛因存在干扰,咖啡因也有强烈干扰。得出的结论是,基于该方法的结果不可靠。