Spectroscopy and Spectral Analysis, Volume. 41, Issue 2, 612(2021)
Sequential Injection-Continuous Spectroscopy Based Multi-Parameter Method for Water Quality Analysis
Figures & Tables(8)
Fig. 1. Wavelength-absorption peak graph
(a): Nitrite nitrogen; (b): Nitrate nitrogen (total nitrogen); (c): Total phosphorus
Fig. 3. Schematic diagram of sequential injection spectroscopy platform
Fig. 5. Concentration-absorbance curve
(a): Nitrite nitrogen; (b): Nitrate nitrogen; (c): Total nitrogen; (d): Total phosphorus
Table 1. Comparison of nitrite nitrogen and nitrate nitrogen repeatability (RSD)
View tableView in ArticleTable 1. Comparison of nitrite nitrogen and nitrate nitrogen repeatability (RSD)
亚硝酸盐氮/
(mg ·L-1)RSD/
%国标法RSD/
%硝酸盐氮/
(mg·L-1)RSD/
%国标法RSD/
%0.10 2.47 2.12 0.10 2.38 2.01 0.30 2.86 2.40 0.30 2.73 2.33 0.50 3.44 2.96 0.50 2.94 2.32
Table 2. Comparison of total nitrogen and phosphorus repeatability (RSD)
View tableView in ArticleTable 2. Comparison of total nitrogen and phosphorus repeatability (RSD)
总氮/
(mg·L-1)RSD/
%国标法RSD/
%总磷/
(mg·L-1)RSD/
%国标法RSD/
%0.20 3.73 3.20 0.10 2.10 1.98 0.60 3.57 3.15 0.30 2.28 2.01 1.00 3.86 3.25 0.50 2.56 2.10
Table 3. Reagent dosage comparison and detection limit
View tableView in ArticleTable 3. Reagent dosage comparison and detection limit
参数 国标法 本方法 最低检出限
/(mg·L-1)N -N 磷酸、 显色剂 无试剂 0.02 N -N 硫酸、 酚二磺酸、 氨水 无试剂 0.02 TN 过硫酸钾 过硫酸钾 0.04 TP 过硫酸钾、 钼酸铵、 抗坏血酸 钼酸铵、 抗坏血酸 0.02
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Wen LI, Li-min WANG, Li CHENG, Hai-qi CHEN. Sequential Injection-Continuous Spectroscopy Based Multi-Parameter Method for Water Quality Analysis[J]. Spectroscopy and Spectral Analysis, 2021, 41(2): 612
Paper Information
Category: Research Articles
Received: Jan. 4, 2020
Accepted: May. 16, 2020
Published Online: Apr. 8, 2021
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