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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(gè)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。　　
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(lǐng)域得到廣泛應(yīng)用。

詳細(xì)介紹

Thermo Scientific Dionex IonPac AS24A Hydroxide-Selective Anion-Exchange Column

For Separation of Haloacetic Acids and Bromate in Drinking Water

The Thermo Scientific^? Dionex^? IonPac^? AS24A is a high-capacity hydroxide-selective anion-exchange column optimized for the separation of haloacetic acids (HAAs) as well as a variety of environmental anions. The capacity and selectivity enables analysis of haloacetic acids in drinking water at low-μg/L concentrations. The Dionex IonPac AS24A 4 × 250 mm column is specifically designed for the first dimension separation of haloacetic acids in drinking water prior to the second dimension separation using the Dionex IonPac AS26 capillary column, followed by suppressed conductivity detection. The Dionex IonPac AS24A column is ideal for the development of specialized applications, including 2D-IC, providing excellent separation of environmental anions including inorganic anions, oxyhalides, oxyanions, and organic acids. The high capacity of the Dionex IonPac AS24A column allows injection of complex matrices without overloading the column while maintaining excellent peak shapes for lower concentration analytes. The Dionex IonPac AS24A capillary column offers users excellent retention time reproducibility and in addition, increased mass sensitivity and eluent conservation.

High capacity: 560 μeq per column (4 × 250 mm)
Determine HAAs in high-ionic strength matrices without sample pretreatment
Column selectivity is optimized for a 15 ?C operating temperature
Compatible with HPLC organic solvents
Used as first dimension column in 2D-IC method for haloacetic acids (4 × 250 mm)
Extended application capabilities providing excellent separation of environmental anions

Dionex IonPac^? AS24A Anion Exchange Column Specifications
Substrate Characteristics:	Bead Diameter and Pore Size: 7 ?m (4 × 250, 2 × 250 and 0.4 × 250 mm); super macroporous resin (2000 ?) 11 ?m (4 × 50, 2 × 50, and 0.4 × 50 mm); microporous resin (<10 ?) Crosslinking (%DVB): 55%
Ion Exchange Group:	Functional Group: Alkanol quaternary ammonium ion
Functional Group Characteristics:	Ultralow Hydrophobicity
Capacity:	560 ?eq (4 × 250 mm analytical column) 6 ?eq* (4 × 50 mm guard column) 140 ?eq (2 × 250 mm analytical column) 1.5 ?eq* (2 × 50 mm guard column) 5.6 ?eq (0.4 × 250 mm capillary column) 0.06 ?eq* (0.4 × 50 mm capillary guard column) *Guard is 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 AS24A Analytical Column: 4 × 250 mm, 2 × 250 mm Dionex IonPac AG24A Guard Column: 4 × 50 mm, 2 × 50 mm Dionex IonPac AS24A Capillary Column: 0.4 × 250 mm, Dionex IonPac AG24A Capillary Guard Column: 0.4 × 50 mm
Maximum Operating Pressure:	3000 psi
Phase Compatibility:	pH 0–14; 0–100% HPLC solvents

Analytical Columns
Dionex IonPac AS24A Analytical Column (4 × 250 mm)	076010
Dionex IonPac AS24A Analytical Column (2 × 250 mm)	078112
Dionex IonPac AS24A Capillary Column (0.4 × 250 mm)	082536

Guard Columns
Dionex IonPac AG24A Guard Column (4 × 250 mm)	076011
Dionex IonPac AG24A Guard Column (2 × 50 mm)	082535
Dionex IonPac AG24A Capillary Guard Column (0.4 × 50 mm)	078115