离子色谱法与紫外分光法测定核电厂设备冷却水中亚硝酸盐含量的比对研究

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中图分类号：TP311.52 文献标志码：A 文章编号：2095-2945（2025）25-0071-04

Abstract：Thedeterminationof nitriteincolingwaterofnuclearpowerplantequipmentbyionchromatography（IC）and Ultraviolet-VisibleSpectrophotometry（UV-Vis）wascomparedandanalyzed.Thesuitabilityofthetwomethodswasevaluated systematicallbycomparingthelinearityofstandardcurve，detectionlimitandquantfcationlimitaccuracyprecisionand repeatability. The results showed that the linearity of standard curves was good （R>0.999 ），and the recoveries were 96.7%～ （20号 105.0% .In practical application，the detection limit（0.0036mg⋅L-1） and quantification limit （O.O12 mg·L-1） of ion chromatography arelower，whichissuitableforlowconcentrationdetection，butthelong-termstabityofmeasurementisrelativelypoor（ RSD= （204 5.22% ），andstrictcalibration（suchassingle-pointcalibration）isneeded toensurethereliabilityof data.UVspectrophotometry issimpleand stable （RSD=1.21%），suitable for daily analysis.

Keywords：ionchromatography；ultraviolet spectroscopy；equipment cooling water;nitrite;method comparison

亚硝酸钠（ NaNO2 ）作为一种氧化性缓蚀剂，具有缓蚀效果好、适用范围广和成本低廉等特点，广泛应用于核电厂设备冷却水的腐蚀防护。（剩余4245字）