Detecting the Nondeterministic Degree of Zinc in Water with Atomic Absorption Spectrophotometric MethodTAO Wen - lu, GUI Lie - yong Taicang City Environmental Monitoring Station, Taicang 215400, ChinaAbstract:According to JJF1059 - 1999 Evaluation and Expression of Uncertainty in Measurement, the nondeterministie degree of zinc in water with atomic absorption spectrophotometfic method is analysized by nondeterministic degree evaluation and indicate theory. The evaluation step and its method of nondeterministic degree were explained to get the evaluation results. Results The uncertainty of the result of zinc in water tested by atomic absorption spectrometry is 0.012mg/L as absolute value and 3.5% as relative value. Conclusion The method for determining zinc from water by atomic absorption spectrometry is clearand adequate and without repeated procedure. This method has high application value.[著者文摘]