光谱学与光谱分析, 2018, 38 (6): 1880, 网络出版: 2018-06-29  

电感耦合等离子体原子发射光谱法测定水中总磷的方法研究

Methodology Research for Determination of Total Phosphorus in Water by Inductively Coupled Plasma-Atomic Emission Spectrometry
作者单位
中国地质科学院水文地质环境地质研究所, 河北 正定 050803
摘要
目前, 越来越多的磷进入水中, 严重影响着生态环境和人类身体健康, 但磷的传统分析方法操作复杂, 需外加多种试剂。 采用电感耦合等离子体原子发射光谱法(ICP-AES)测定水中总磷, 对仪器工作条件进行了探讨。 结果表明仪器最佳工作条件如下: 分析谱线为213.617 nm, 射频功率为1 300 W, 雾化器流速为0.5 L·min-1, 观测高度为15 mm, 蠕动泵泵速为1.2 mL·min-1, 观测方式为径向。 在仪器的最佳工作条件下, 对本方法测定磷的检出限, 精密度, 回收率进行了研究。 结果表明仪器检出限为0.028 mg·L-1, 方法检出限为0.084 mg·L-1, 精密度在0.6%~3.9%之间, 回收率为102.3%~103.0%。 此外, 本方法与磷钼蓝分光光度法进行了对比, 分析结果基本一致。 该方法快捷简便, 具有较好的精密度和回收率, 适于实际样品的分析。
Abstract
At present, more and more phosphorus is entering the water, which seriously affects the ecological environment and human health, however, the traditional methods of phosphorus analysis are complex and require multiple reagents. In this paper, total phosphorus in water is determined by inductively coupled plasma-atomic emission spectrometry (ICP-AES). In this paper, the instrument working conditions were discussed. The results showed that the optimum instrument working conditions were as follows: the analytical line was 213.617 nm, the RF power was 1 300 W, the nebulizer flow rate was 0.5 L·min-1, the observation height was 15 mm, the peristaltic pump speed was 1.2 mL·min-1, and the observation way was radial. Under the optimum working conditions, the detection limit, precision and recovery of phosphorus were studied. The results showed that the instrument detection limit and method detection limit of phosphorus were 0.028 and 0.084 mg·L-1, the relative standard deviation was between 0.6% and 3.9% in the accuracy test, recovery rates were between 102.3% and 103.0%. In addition, this method was compared with phosphor molybdenum blue spectrophotometry, and the results were basically consistent. This method is quick and easy with good precision and recovery, which is suitable for the analysis of actual samples.

刘佳, 刘冰冰, 韩梅, 贾娜, 张辰凌. 电感耦合等离子体原子发射光谱法测定水中总磷的方法研究[J]. 光谱学与光谱分析, 2018, 38(6): 1880. LIU Jia, LIU Bing-bing, HAN Mei, JIA Na, ZHANG Chen-ling. Methodology Research for Determination of Total Phosphorus in Water by Inductively Coupled Plasma-Atomic Emission Spectrometry[J]. Spectroscopy and Spectral Analysis, 2018, 38(6): 1880.

关于本站 Cookie 的使用提示

中国光学期刊网使用基于 cookie 的技术来更好地为您提供各项服务,点击此处了解我们的隐私策略。 如您需继续使用本网站,请您授权我们使用本地 cookie 来保存部分信息。
全站搜索
您最值得信赖的光电行业旗舰网络服务平台!