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美國(guó)戴安Dionex

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戴安液相色譜柱

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(shì)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(duì)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

IonPac AS14 Carbon Eluent Anion-Exchange Column

For the Analysis of Fluoride and Other Inorganic Anions

The IonPac^? AS14 is designed for fast analysis of the common inorganic anions in diverse sample matrices.

Common inorganic anions are resolved in 13 minutes using an isocratic carbonate/bicarbonate eluent.
Sodium tetraborate gradient optimizes difficult separations.
The AS14 column meets or exceeds US EPA Method 300.0 (A) performance requirements.

The AS14 supports the separation of inorganic anions, including fluoride, chloride, nitrite, bromide, nitrate, phosphate, and sulfate using a carbonate/bicarbonate eluent coupled with suppressed conductivity detection. With the AS14, inorganic anions can be determined easily in drinking water, wastewater, foods and beverages, scrubber solutions, and other diverse sample matrices.

For simplified operation, use the AS14 Eluent Concentrate and the Combined Seven Anion Standard. Use the Anion Self-Regenerating Suppressor (ASRS 300) with the AS14 column for low-noise operation.

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

IonPac AS14 Anion-Exchange Column Specifications
Dimensions	IonPac AS14 Analytical Column: 2 × 250 mm and 4 × 250 mm IonPac AG14 Guard Column: 2 × 50 mm and 4 × 50 mm
Maximum operating pressure	27.6 MPa (4000 psi)
phase compatibility	pH 2–12; 0–100% HPLC solvents
Substrate characteristics	Bead Diameter: 9 ?m Pore Size: 100 ? Cross-Linking (%DVB): 55%
Functional group characteristics	Ion-Exchange Group: Surface-functionalized alkyl quaternary ammonium ion Hydrophobicity: Medium High
Capacity	16 ?eq (2 × 250 mm analytical column) 65 ?eq (4 × 250 mm analytical column)
Column construction	PEEK with 10-32 threaded ferrule-style end fittings. All components are nonmetallic.