摘要
对两种阴离子分离柱(AS 17-C和AS 19)在大体积进样(500 μL)离子色谱法测定发电机组蒸汽中8种痕量阴离子中的分离效果做了试验和比较.现场取得的水样经滤膜过滤后直接进样,分别经上述两柱分离,并用不同浓度的氢氧化钾溶液作为流动相进行梯度淋洗,用抑制电导检测器检测.8种阴离子的质量浓度均在5～50 μg·L-1范围内呈线性,检出限(3S/N)分别在0.07～0.73 μg·L-1,0.08～1.9μg·L-1之间.用标准加入法做回收试验,测得回收率在99.6％～104％(AS 17-C柱)和98.0％～103％(AS 19柱)之间.
The efficiency of 2 different anion separation columns (i.e.,AS 17-C and AS 19) used in the IC determination of 8 trace anions with large volume sample introduction (500 μL) was studied comparatively.The water sample taken from worksite was filtered on membrane and introduced directly into the instrument.Separation of the 8 anions was performed separately on the 2 columns.KOH solutions with various concentrations were used as mobile phase in the gradient elution,and inhibitory conductivity detection was adopted in IC analysis.Linearity for the 8 anions was found same in the range of 5 50 μg · L-1,while the detection limits (3S/N) found were in the ranges of 0.07-0.73 μg · L-1 and 0.08-1.90 μg · L-1 for the 2 columns respectively.Values of recovery found by standard addition method were in the ranges of 99.6％-104％ (for AS 17 C) and 98.0％-103％ (for AS 19).
出处
《理化检验（化学分册）》
CAS
CSCD
北大核心
2014年第1期101-104,共4页
Physical Testing and Chemical Analysis(Part B:Chemical Analysis)
