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戴安公司生產(chǎn)的儀器主要有離子色譜儀、高效液相色譜儀、快速溶劑萃取儀和氨基酸直接分析儀。其中離子色譜儀憑借著雄厚的技術(shù)優(yōu)勢和方法已廣泛地應(yīng)用于各個領(lǐng)域，其*達(dá)80%。與離子色譜相關(guān)的文章有90%均出自戴安公司生產(chǎn)的離子色譜儀。　　
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詳細(xì)介紹

IonPac AS14A Carbonate Eluent Anion-Exchange Column

Fast Analysis of the Common Inorganic Anions in Diverse Sample Matrices

The IonPac^? AS14A anion-exchange column is a carbonate-based column for fast analysis of the common inorganic anions in diverse sample matrices. The AS14A meets the performance requirements specified in US EPA Method 300.0 (A).

High efficiency and fast analysis (8 minutes)
High-capacity applications (13 minute run time)
Improved peak shape, efficiency, and pH stability
Meets or exceeds US EPA Method 300.0 (A) performance requirements
Simplified operation with AS14A Eluent Concentrate and Combined Seven Anion Standard

The AS14A is designed for the separation of inorganic anions, including fluoride, chloride, nitrite, bromide, nitrate, phosphate, and sulfate, using a carbonate/bicarbonate eluent coupled with suppressed conductivity detection. The inorganic anions can easily be determined in drinking water, wastewater, foods and beverages, scrubber solutions, and other diverse sample matrices.

For simplified operation use the AS14A with AS14A Eluent Concentrate and the Combined Seven Anion Standard. Use the ASRS 300 suppressor with the AS14A column for low-noise operation.

Note: See also the IonPac AS22, the newest carbonate eluent column recommended for fast analysis of inorganic anions.

Dionex IonPac AS14A Anion-Exchange Column Specifications
Dimensions	Dionex IonPac AS14A Analytical Column: 3 × 150 mm and 4 × 250 mm Dionex IonPac AG14A Guard Column: 3 × 30 mm and 4 × 50 mm
Maximum operating pressure	27.6 MPa (4000 psi)
phase compatibility	pH 0–14; 0–100% HPLC solvents
Substrate characteristics	Bead Diameter: 7 ?m (4 × 250 mm); 5 ?m (3 × 150 mm) Pore Size: 100 ? Cross-Linking (%DVB): 55%
Functional group characteristics	Ion-Exchange Group: Surface-functionalized alkyl quaternary ammonium ion Hydrophobicity: Medium High
Capacity	40 ?eq (3 × 150 mm analytical column) 120 ?eq (4 × 250 mm analytical column)
Column construction	PEEK with 10-32 threaded ferrule-style end fittings. All components are nonmetallic.