Large-Volume Injection Electrothermal AAS Combined with Tungsten-treated Pyrolytic Graphite Furnace: Determination of Cadmium in Tap, Snow and River Water Samples with Phosphate Modifier

Imai, Shoji; Ishikawa, Satoshi; Kikuchi, Yoichi; Yonetani, Akira

doi:10.2116/analsci.20.575

Cited by 2 publications

(1 citation statement)

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“…、金属-金属混合物 [4][5][6] )、金属盐(如：铵盐 [7][8][9][10] 、磷酸盐 [11] 、硝酸盐 [12][13][14][15][16] 、氯化物 [17] )、金属+金属盐 [18] 、有机改进剂 [7,19,20,21]…”

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Discussion on Matrix Modifiers in the Determination of Heavy Metal Ions in Environmental Water Samples by Graphite Furnace Atomic Absorption Spectrometry

Tang¹,

Gao²,

Wang³

2021

Daxue Huaxue

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Adding matrix modifier is a common and efficient method to eliminate chemical interferences in graphite furnace atomic absorption spectrometry (GFAAS). The students' understanding of the choice and mechanism of matrix modifier is only at the textbook level. In the light of this, the multiple teaching modes are adopted to make students' learning activities changed from passive to active. Through literature investigation, group discussion, induction and summary and subsequent student experiments, the matrix modifier for the determination of heavy metal ions in environmental water samples by GFAAS is discussed in depth.

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Discussion on Matrix Modifiers in the Determination of Heavy Metal Ions in Environmental Water Samples by Graphite Furnace Atomic Absorption Spectrometry

Tang¹,

Gao²,

Wang³

2021

Daxue Huaxue

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Flame and Graphite Furnace Atomic Absorption Spectrometry in Environmental Analysis

Sperling

2022

Encyclopedia of Analytical Chemistry

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Atomic absorption spectrometry (AAS) is a well‐established technique for the quantitative determination of elements in environmental materials at trace and ultratrace levels. AAS is an optical atomic spectrometric technique based on the measurement of the specific absorption originated from the free, unionized atoms in the gas phase. For transferring the analyte to free atoms, different types of atomizers are in use, out of which the flame and the graphite furnace are the most often used atomizers. Typical detection limits of flame AAS (FAAS) are of the order of 1–100 μg L −1 , making it a perfect tool for the determination of minor and trace elements, at least for contaminated samples. Graphite furnace AAS (GFAAS), offering detection limits which are about a factor of 20–200 lower than for FAAS, is the standard method for many trace elements especially for background values, and for unpolluted samples, such as freshwater and biological materials. AAS in its conventional configuration is a single element technique, which has to be used in a sequential mode when more than one element has to be determined. However, there are commercial instruments available, that can be used for the determination of six to eight elements simultaneously. While most manufacturers provide instruments working with line sources, one manufacturer has commercialized high‐resolution instruments working with continuum sources (HRCS‐AAS).

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Large-Volume Injection Electrothermal AAS Combined with Tungsten-treated Pyrolytic Graphite Furnace: Determination of Cadmium in Tap, Snow and River Water Samples with Phosphate Modifier

Cited by 2 publications

References 13 publications

Discussion on Matrix Modifiers in the Determination of Heavy Metal Ions in Environmental Water Samples by Graphite Furnace Atomic Absorption Spectrometry

Discussion on Matrix Modifiers in the Determination of Heavy Metal Ions in Environmental Water Samples by Graphite Furnace Atomic Absorption Spectrometry

Flame and Graphite Furnace Atomic Absorption Spectrometry in Environmental Analysis

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