,吸光度分別為0.395 ,0.388,0.366.0.378,0.406,0.415,0.425,0.440,0.435,0.452 。偏差分別為:
.25,.32,.54,.42,.14,.05,.05,.20,.15,.32,相對標準差S為:7.19%;
A+1.8S>15%
即不合格。