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人体摄入过量铝可对多系统产生危害。为研究水质酸度对铝测定结果的影响,我们采用分光光度法对水质中铝进行了测定,井对实验条件进行了探讨,现报告如下。1 材料与方法1.1 仪器和试剂1.1.1 仪器:721分光光度计,50ml玻璃比色管,0.45um微孔滤膜和酸式砂芯漏斗。1.1.2 试剂:试剂均采用去离子水配制,试剂均为AR级。铝标准贮备液:18.5×10~(-3)mmol/L,称取0.500g铝粉用浓盐酸溶解,NaOH中和,再用5×10~(-4)mmol/LNaCl溶解,定溶至1.0L。铝标准使用液:(A3.7×10~(-7)mmol/L,B3.7×10~(-8)mmol/L)。用5×10~(-4)mmol/L NaCl溶液稀释铝贮备液配制成。显
Excessive body intake of aluminum can be harmful to multiple systems. In order to study the influence of water acidity on the determination result of aluminum, we measured the aluminum in water by spectrophotometry, and discussed the experimental conditions. The report is as follows. 1 Materials and Methods 1.1 Instruments and reagents 1.1.1 Instruments: 721 spectrophotometer, 50ml glass colorimetric tube, 0.45um microporous membrane and acid sand funnel. 1.1.2 Reagents: Reagents are prepared using deionized water, reagents are AR grade. Aluminum standard stock solution: 18.5 × 10 -3 mmol / L, weigh 0.500 g aluminum powder, dissolve with concentrated hydrochloric acid, neutralize with NaOH, dissolve with 5 × 10 -4 mol / L NaCl, dissolve to 1.0L. Aluminum standard solution: (A3.7 × 10 ~ (-7) mmol / L, B3.7 × 10 ~ (-8) mmol / L). Dilute the aluminum stock solution with 5 × 10 ~ (-4) mmol / L NaCl solution. Significantly