摘要
目的:了解2023年淄博市生活饮用水中锂、硼、钾、钠、钙、镁、锰、铁、铜、锌、硒、锶及钡13种营养元素的含量水平和分布特征。方法:采用电感耦合等离子质谱法对淄博市359份生活饮用水样本中13种营养元素进行检测,采用非参数检验比较南部山区与北部平原地区、丰水期与枯水期饮用水中营养元素含量是否有显著性差异;比较淄博市饮用水中界限指标锶、锂、锌、硒含量与《食品安全国家标准饮用天然矿泉水》(GB 8537-2018)中规定的含量下限是否有显著性差异。结果:淄博市生活饮用水中锂、硼、钾、钠、钙、镁、锰、铁、铜、锌、硒、锶、钡含量的中位数分别为0.011 2 mg·L^(-1)、0.035 6 mg·L^(-1)、25.8 mg·L^(-1)、26.6 mg·L^(-1)、2.15 mg·L^(-1)、23.4 mg·L^(-1)、0.000 30 mg·L^(-1)、0.005 23 mg·L^(-1)、0.000 45 mg·L^(-1)、0.000 40 mg·L^(-1)、0.000 37 mg·L^(-1)、0.508 mg·L^(-1)、0.092 3 mg·L^(-1)。钠和锰含量的最大值分别为1 178.6 mg·L^(-1)和0.342 mg·L^(-1),超过了限量标准(分别为200 mg·L^(-1)和0.1 mg·L^(-1))。北部平原地区生活饮用水中锂、硼、钾、钠、镁、铁、铜、锶、硒含量均大于南部山区(P<0.05),丰水期锌和硒含量高于枯水期(P<0.05)。锶含量中位数为0.508 mg·L^(-1),显著高于国家标准中规定的锶含量下限值0.20 mg·L^(-1)。结论:2023年淄博市饮用水水质优良,水中锶含量较丰富,但个别监测点中钠和锰含量超过规定限值,应引起相关部门的重视。
Objective:To investigate the content level and distribution characteristics of 13 nutrient elements lithium,boron,potassium,sodium,calcium,magnesium,manganese,iron,copper,zinc,selenium,strontium,and barium in the drinking water of Zibo city in 2023.Method:The nutrient element in 359 samples of drinking water in Zibo city were detected by inductively coupled plasma mass spectrometry.Non-parametric test was used to compare whether there were significant differences in nutrient element content in drinking water between southern mountain area and northern plain area,between wet season and dry season.The content of strontium and lithium in drinking water of Zibo city and the lower limit of strontium and lithium content stipulated in the GB 8537—2018 was compared.Result:The median contents of lithium,boron,potassium,sodium,calcium,magnesium,manganese,iron,copper,zinc,selenium,strontium,and barium in drinking water in Zibo city were 0.0112 mg·L^(-1)、0.0356 mg·L^(-1)、25.8 mg·L^(-1)、26.6 mg·L^(-1)、2.15 mg·L^(-1)、23.4 mg·L^(-1)、0.00030 mg·L^(-1)、0.00523 mg·L^(-1)、0.00045 mg·L^(-1)、0.00040 mg·L^(-1)、0.00037 mg·L^(-1)、0.508 mg·L^(-1)、0.0923 mg·L^(-1),respectively.The maximum values of sodium and manganese were 1178.6 mg·L^(-1) and 0.342 mg·L^(-1),respectively,exceeding the limit standards(200 mg·L^(-1) and 0.1 mg·L^(-1),respectively).The content of lithium,boron,potassium,sodium,magnesium,iron,copper,strontium,and selenium in drinking water in the northern plain area was higher than that in the southern mountainous area(P<0.05).The zinc and selenium content during the flood season was higher than that during the dry season(P<0.05).The median concentration of strontium was 0.508 mg·L^(-1),which was significantly higher than the lower limit of strontium content of 0.20 mg·L^(-1) specified in the GB 8537—2018.Conclusion:In 2023,the drinking water quality in Zibo city was excellent,and the strontium content in the water was relatively rich.However,in some monitoring points,sodium and manganese exceeded the prescribed limits,which should be taken seriously by relevant departments.
作者
朱莎
常通
孔祥达
ZHU Sha;CHANG Tong;KONG Xiangda(Zibo Center for Disease Control and Prevention,Zibo 255026,China;Zibo Key Laboratory of Environmental Organic Pollution and Human Health Monitoring and Analysis,Zibo 255026,China)
出处
《食品安全导刊》
2024年第14期92-95,共4页
China Food Safety Magazine
关键词
生活饮用水
营养元素
电感耦合等离子质谱法
drinking water
nutrient element
inductively coupled plasma mass spectrometry
