论文部分内容阅读
建立了离子色谱电感耦合等离子体质谱联用技术(ICICPMS)用于饮用水中的痕量BrO-3及Br-的测量。使用DIONEXCarbopacPA100(4mm×250mmi.d.)在流速1mL/min及5mmol/LNH4NO3(pH5.7)淋洗液下进行BrO-3和Br-的分离。该方法以100μL进样量对BrO-3的检出限为0.0027μmol/L(0.22μg/L);对Br-的检出限为0.0067μmol/L(0.54μg/L)。对水样的分析结果表明,所测矿泉水中的BrO-3浓度大大超出了世界卫生组织最新《饮用水水质准则》中所规定的溴酸盐的指导值,而所测量的青岛崂山区生活用水则未检出BrO-3。
The ion chromatography ICP-MS (ICICPMS) was established for the determination of trace BrO-3 and Br- in drinking water. BrO-3 and Br- separation was performed using DIONEX Carbopolac 100 (4 mm x 250 mm id) at a flow rate of 1 mL / min and 5 mmol / L NH4NO3 (pH 5.7) eluent. The detection limit of BrO-3 was 0.0027μmol / L (0.22μg / L) in 100μL injection volume and 0.0067μmol / L (0.54μg / L) to Br-. The analysis of the water samples showed that the concentration of BrO-3 in the mineral water under test exceeded the guideline of bromate specified in the latest WHO Guidelines for Drinking-water Quality, and the measured domestic water consumption in Laoshan District of Qingdao No BrO-3 was detected.