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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用于各個領域，其*達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。　　
戴安公司的快速溶劑萃取儀15分鐘之內(nèi)僅用15毫升溶劑既可完成對10g樣品的萃取，該技術(shù)已在環(huán)境、藥物、食品和聚合物工業(yè)等領域得到廣泛應用。

詳細介紹

Thermo Scientific Dionex IonPac AS23 Carbonate Eluent Anion-Exchange Column

Precise, Isocratic Analysis of Trace Oxyhalides and the Common Inorganic Anions

The Thermo Scientific? Dionex? IonPac? AS23 carbonate eluent anion-exchange column is specifically designed for trace bromate in drinking water. Its high-capacity and selectivity enables determination of bromate in drinking water at the low μg/L level. The Dionex IonPac AS23 column meets the performance requirements of U.S EPA Methods 300.0 and 300.1. The Dionex IonPac AS23 column is offered in three formats: standard bore (4 × 250 mm), microbore (2 × 250 mm) and capillary (0.4 × 250 mm). The capillary formats is packed with the same material as the equivalent standard bore version (providing the same performance as a 4 mm column), but requires only 1/100th the eluent flow rate. The capillary format provides the advantage of significantly reduced eluent consumption, which helps reduce operating costs.

Optimized for isocratic carbonate/bicarbonate eluent
Recommended column for trace bromate in drinking water matrices
Meets performance requirements specified in U.S. EPA Methods 300.0 and 300.1
Ideal alternative for the Thermo Scientific Dionex IonPac AS9-HC oxyhalide and inorganic anion applications
Simple, accurate eluent preparation with the Dionex IonPac AS23 Eluent Concentrate
Optimized for a 30 °C operating temperature to ensure reproducible retention times
Compatible with organic solvents to enhance analyte solubility

The Dionex IonPac AS23 column is designed for the analysis of oxyhalides and the common inorganic anions including fluoride, chlorite, bromate, chloride, nitrite, bromide, chlorate, nitrate, phosphate, and sulfate in drinking water, ground water, wastewater, and other diverse sample matrices.

The Dionex IonPac AS23 column is the newest carbonate eluent column recommended for the analysis of oxyhalides including bromate. It can be used in combination with the Eluent Generator and the Electrolytic pH Modifier (EPM) which automatically produces potassium carbonate/bicarbonate eluents from water. The Dionex IonPac AS23 column is an ideal alternative, using carbonate-bicarbonate eluents, for Dionex IonPac AS9-HC applications.

Dionex IonPac AS23 Anion-Exchange Column Specifications
Ion-Exchange Group:	Functional Group: Alkanol quaternary ammonium ion
Functional Group Characteristics:	Ultralow hydrophobicity
Capacity:	3.2 ?eq (0.4 × 250 mm capillary column) 80 ?eq (2 × 250 mm analytical column) 320 ?eq (4 × 250 mm analytical column) 0.06 ?eq* (0.4 × 50 mm Capillary guard column) 1.5 ?eq* (2 × 50 mm guard column) 6 ?eq* (4 × 50 mm guard column) *Guards are packed with a low-capacity microporous resin.
Column Construction:	PEEK with 10-32 threaded ferrule style end fittings. All components are nonmetallic.
Dimensions:	Dionex IonPac AS23 Analytical Column: 2 × 250 mm and 4 × 250 mm Dionex IonPac AS23 Capillary Column: 0.4 × 250 mm Dionex IonPac AG23 Guard Column: 2 × 50 mm and 4 × 50 mm Dionex IonPac AG23 Capillary Guard Column: 0.4 × 50 mm)
Maximum Operating Pressure:	3000 psi
Phase Compatibility:	pH 0–14; 0–100% HPLC solvents
Substrate Characteristics:	Bead Diameter and Pore Size: 6.0 ?m (0.4 × 250, 2 × 250 and 4 × 250 mm); super macroporous resin (2000 ?) 11 ?m (0.4 × 50, 2 × 50 and 4 × 50 mm); microporous resin (<1 ?) Cross-linking (%DVB): 55%

Analytical Columns
IonPac AS23 Analytical Column (2 x 250 mm)	064145
IonPac AS23 Analytical Column (4 x 250 mm)	064149
Dionex IonPac AS23 Capillary Column (0.4 × 250 mm)	079782