A、<p><span style="font-size: 10.5pt; font-family: 宋体;">稀盐酸、氯化钡</span></p>
B、<p><span style="font-size: 10.5pt; font-family: 宋体;">硝酸、硝酸银</span></p>
C、<p><span style="font-size: 10.5pt; font-family: 宋体;">盐酸、硫氰酸铵</span></p>
D、<p><span style="font-size: 10.5pt; font-family: 宋体;">醋酸盐缓冲液<span lang="EN-US">(pH 3.5)</span>、硫代乙酰胺</span></p>
E、<p><span style="font-size: 10.5pt; font-family: 宋体;">盐酸、锌粒、溴化汞试纸</span></p>
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