分光光度法测定洗衣机漂洗性能

A spectrophotometric method for determination of washer rinse performance

标准洗衣粉IECA*中最主要的活性成分为LAS,本测试方法通过使用紫外分光光度计测量GB/T 4288-2008洗后污染布萃取液样品在LAS最大吸收波长处的吸光度,利用已知吸光度与标准洗衣粉浓度之间的标准校准曲线,得到待测萃取液的洗衣粉浓度,并计算出实际负载中残留洗衣粉量,从而判别漂洗性能的优劣。

This method is accomplished by measuring the UV absorbance at the wavelength particular to LAS,a key ingredient of IECA* with known linear relationship.And the liquid sample is extracted from the carbon-black strips which was used in GB/T 4288-2008 washing performance test.Using a Concentration vs.Absorbance Curve test the absorbance values,then be converted into concentration,and residual detergent could be calculated.