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目的评价氰化物中毒事件的应急检测方法。方法采集可疑氰化物中毒患者的呕吐物、胃内容物标本,采用普鲁士蓝法、异烟酸-吡唑酮法、苦味酸试纸法检测氰化物。结果普鲁士蓝法、异烟酸-吡唑酮法、苦味酸试纸法的检出限分别为200μg、0.1μg、12.5μg;患者的普鲁士蓝法、苦味酸试纸法检出氰化物均为阴性,蒸馏去除干扰后用异烟酸-吡唑酮法测定结果呕吐物和胃内容物,分别为2.30 mg/L、1.23 mg/L。结论在进行氰化物中毒应急检测时,有时不能仅考虑传统的定性方法,特别在样品量少或者样品经过稀释时。
Objective To evaluate the emergency detection of cyanide poisoning. Methods The vomitus and stomach contents of patients with suspected cyanide poisoning were collected. Cyanide was detected by Prussian blue method, isonicotinic acid - pyrazolone method and picric acid test paper method. Results The detection limits of Prussian blue method, isonicotinic acid - pyrazolone method and picric acid test paper method were 200 μg, 0.1 μg and 12.5 μg, respectively. Prussian blue method and picric acid test strip were both negative for cyanide, Vomit and stomach contents measured by isonicotinic acid-pyrazolone method were 2.30 mg / L and 1.23 mg / L, respectively, after distilling and removing interference. Conclusions In emergency testing for cyanide poisoning, sometimes only traditional qualitative methods can not be considered, especially when the sample volume is low or the sample is diluted.