Guglia E B
Med Tr Prom Ekol. 1996(10):34-6.
The authors elaborated a method measuring air level of orthophosphorous and orthophosphoric acids by means of ion chromatography within the range of 0.1-25 mg/cu m. The samples are extracted through concentration on a filter. The analysis regime includes depression of the background levels. The separating column (4 x 200 mm) is filled with anion exchanger BT IAN, the suppressing column (6 x 150 mm) is filled with cation exchanger Dowex 50 x 8, the elutriating agent is 1.5 mM of sodium carbonate, the detector is conductometric. Minimal amounts of ions that could be detected in the analyzed solution are 7-10 ng (HPO32-), 10-15 ng (HPO 42-). The method is designed to analyze the air of workplace.
作者阐述了一种通过离子色谱法在0.1 - 25毫克/立方米范围内测量空气中正磷酸和偏磷酸含量的方法。样品通过在滤膜上富集进行萃取。分析流程包括背景水平的抑制。分离柱（4×200毫米）填充有阴离子交换剂BT IAN，抑制柱（6×150毫米）填充有阳离子交换剂Dowex 50×8，洗脱剂为1.5毫摩尔的碳酸钠，检测器为电导检测器。分析溶液中可检测到的离子最小量为7 - 10纳克（HPO32-）、10 - 15纳克（HPO42-）。该方法旨在分析工作场所的空气。
