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目的应用酸度计法测定消毒剂中戊二醛含量,建立测定条件。方法以硫酸为标准溶液滴定,用酸度计在pH值4.4~4.2指示终点条件下,测定消毒剂中戊二醛的含量。结果对含量为20 g/L的戊二醛消毒液进行测定,结果与2002年版《消毒技术规范》规定的滴定法测定结果一致,差异无统计学意义。结论酸度计法测定消毒剂中戊二醛含量,操作方便,终点易判定、误差小、结果准确可靠。
Objective To measure the glutaraldehyde content in disinfectant by acidity meter and set up the measuring conditions. Methods titration with sulfuric acid as the standard solution, with pH meter pH value of 4.4 to 4.2 under the endpoint conditions, determination of glutaraldehyde disinfectant content. Results The glutaraldehyde disinfectant with the content of 20 g / L was determined. The results were in good agreement with the results of titration determined by the Disinfecting Technical Specification of 2002, the difference was not statistically significant. Conclusion The acidity meter method for the determination of glutaraldehyde in disinfectant has the advantages of easy operation, easy determination of endpoint, little error and accurate and reliable results.