The determination of common inorganic anions in drinking water is one of the most important applications of ion chromatography (IC) worldwide. Ion chromatography has been approved for compliance monitoring of these common inorganic anions in U.S. drinking water since the mid-1980s, as described in U.S. EPA Method 300.0. This application note describes the determination of inorganic anions in drinking water and other environmental waters using an IonPac AS14 column and conditions that are consistent with those in U.S. EPA Method 300.0.

The determination of common inorganic anions in environmental waters is one of the most important applications of ion chromatography (IC). This Application Note describes the determination of inorganic anions in wastewater and other environmental waters using conditions that are consistent with those in U.S. EPA Method 300.0. In addition to the Thermo Scientific Dionex IonPac AS4A-SC column, the Dionex IonPac AS14 and Dionex IonPac AS9-HC column are also discussed as options for this method. See AN 135 (a), (b), and (c), respectively.

The determination of trace anionic contamination is important to power generation and to the electronics industries to minimize corrosion. Here µg/L concentrations of anions are determined in a 1000-µL injection, in pull mode, of a morpholine solution on IonPac AS14 column. This application is optimized for a fast run time (10 min) using a two-step isocratic separation at two concentration levels of boric acid and sodium hydroxide eluents. AN114 is also suitable for trace anions in pure water. AU191 describes a similar technique to analyze samples containing boric acid and lithium.

本方法在碳酸盐体系淋洗液中加入有机改进剂，使用等度淋洗的方式检测三种甜味剂和两种防腐剂，对仪器配置要求低，分析时间短，灵敏度高，结果准确可靠。适用于白酒、可乐中上述甜味剂和防腐剂的测定。

At nuclear power plants, monitoring the concentrations of trace anions is important to reduce the risks associated with operation and to maintain plant reliability. IC is the most popular technique for the determination of anions in power plant waters because it provides the required sensitivity to detect trace-level concentrations. This application describes a simple and robust IC method for the determination of trace fluoride, chloride, and sulfate in lithium-containing borated waters.