煤化工废水中无机阴离子的检测方法研究

高健,尚云涛,张洪杰

Study on detection of inorganic anions in coal chemical wastewater

Jian Gao,Yuntao Shang,Hongjie Zhang

表5 加标回收率实验

阴离子 本底质量浓度/(mg·L-1) 加标质量浓度/(mg·L-1) 检测质量浓度/(mg·L-1) 加标回收率/% F- 3.75 2.00 5.85 102.67 3.88 2.00 5.73 96.13 3.61 2.00 5.71 102.77 Cl- 334.59 100.00 437.68 100.92 337.82 100.00 442.74 101.46 336.21 100.00 435.11 99.67 NO2- 63.18 10.00 74.29 101.76 60.27 10.00 69.24 98.29 64.81 10.00 72.88 97.02 Br- 22.86 10.00 31.84 95.54 24.72 10.00 35.73 104.09 26.83 10.00 35.96 96.76 NO3- 110.43 100.00 212.62 101.98 113.65 100.00 212.35 98.86 115.38 100.00 214.64 99.36 PO43- 394.87 100.00 495.21 100.09 396.14 100.00 495.28 99.78 397.22 100.00 499.41 100.55 SO42- 366.73 100.00 465.53 99.67 368.87 100.00 472.19 100.90 365.26 100.00 466.33 100.29