Water quality safety is the lifeline of people's health, industrial production, and environmental governance. Accurate detection is the first step in risk management, from trace pollutants in drinking water, complex ions in industrial wastewater, to trace indicators in environmental water samples. Among numerous detection techniques,Ion Chromatographyby virtue ofHigh separation efficiency, strong qualitative ability, and excellent anti-interference performanceWith unique advantages, it has become an irreplaceable 'main force' in the field of water quality analysis.

In 2023, the revised GB/T5750-2023 "Standard Test Methods for Drinking Water" issued by the state added multiple application specifications for ion chromatography, including perchloric acid, glyphosateHalogenated acetic acidDetection methods for characteristic pollutants such as acrylic acid. This standard update not only improves the drinking water testing system, but also provides accurate monitoring of various substances in waterMore scientific technological basis and more rigorous methodological supportPromote water quality testing technology to reach new heights.

Thermo Fisher's "water only" online electrolytic eluent generator technology simplifies the operation process, reduces reagent consumption and contamination risks, and allows for simultaneous detection of multiple components with a single injection. High sensitivity detector and high-capacity chromatographic column design enable rapid and accurate separation and detection of pollutants in water samplesMultiple concentration ions, sensitivity 'fully loaded'Let trace pollution be exposed.

A powerful tool for ensuring water quality safety!!!——Thermo Fisher Ionic Chromatography Product Family

These new water quality scenarios showcase the power of ion chromatography

Option 1:✦

Rapid monitoring scheme for common anions and three disinfection by-products

Chlorite, bromate, and chlorate, as common disinfection by-products, pose certain health hazards and carcinogenic risks to the human body, and their residual levels need to be regularly tested.

1-fluoride ion; 2-Hypochlorite; 3-Bromate salt; 4-chloride ion; 5-Nitrite; 6-chlorate salt; 7-Bromide ion; 8-nitrate; 9-Sulfate; 10 Phosphate

Figure 1 Rapid analysis of 3 common disinfection by-products and 7 conventional anions

Figure 2: Dionex Inuvion with RFID High Pressure Ion Chromatography (EG pressure up to 5000psi, compatible with multi-step gradients)

Thermo Fisher Scientific - Rapid determination of common anions and three disinfection by-products in drinking water, with the following advantages:

·Fast separation speed, analysis of 10 ions can be completed in 11 minutes;

·Good separation, high matrix does not affect the separation and determination of trace disinfection by-products;

·High sensitivity, 200 μ L injection, detection limit for three common disinfection byproducts~0.3 μ g/L, meeting national standard requirements;

·The above analysis was conducted using a 4 μ m packed chromatography column on an Inuvion high-pressure ion chromatography system.

Option 2:✦

9 monitoring schemes for halogenated acetic acids (MCAA/MBAA/MIAA/DCAA/DBAA/DIAA/TCAA/TBAA/TIAA)

Haloacetic acid is produced during the disinfection process of drinking water and poses a carcinogenic risk to the human body. GB/T 5750-2023

The MCAA, DCAA, TCAA, MBAA, and DBAA ion chromatography methods have been added to the "Standard Inspection Methods for Drinking Water". In response to the above items, Thermo Fisher's plan is as follows:

Figure 3 Dionex ICS-6000 High Pressure Ion Chromatography Instrument (Modular, High Pressure Resistant, Acid and Alkali Resistant, Biocompatible)

Figure 4 Separation spectra of 9 halogenated acetic acids in water quality

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Thermo Fisher Scientific has the following advantages in detecting halogenated acetic acid disinfection by-products in drinking water:

·Fully meet the requirements for disinfection byproduct detection in GB/T 5750-2023, MCAA, DCAA, TCAA, MBAA, DBAA, and TBAA can be detected simultaneously without mutual interference, quickly, and efficiently;

·Expanded iodoacetic acid (MIAA, DIAA, TIAA) analysisNine types of halogenated acetic acids can be separated simultaneously and there is no interference in actual water samples.

·Using IonPac AS19 high-capacity chromatography column, with good salt resistance, large volume direct injection is sufficient, and ppm level conventional ions will not interfere with ppb level disinfection by-products, resulting in accurate and reliable results;

·The sample does not require pre column and post column derivatizationDirect injection measurement with a detection limit as low as 0.43-4.0 μ g/L.

Summary:

As a powerful tool for water quality testing, the choice of ion chromatography directly affects detection efficiency and data quality. Thanks to its excellent high sensitivity and precision, the Thermo Fisher ion chromatograph can effectively monitor disinfection by-products and pollutants in water quality, giving you more confidence in safeguarding water quality safety!

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