Gamma-ray Spectrometry of Short-lived Radionuclides in  Rain Water Collected with Solid Phase Extraction Disk

Koike, Yuya; Sumiyama, Hiroaki; Odagiri, Yusuke; Inui, Tetsuo; Iwahana, Yuki; Kurihara, Yutaka; Nakamura, Toshihiro

doi:10.2116/bunsekikagaku.62.507

Cited by 2 publications

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“…In particular, membrane disk SPEs have been used to pretreat large-volume water samples because they allow relatively high flow rates, due to their large cross-sectional areas. 16 SPE disks keep their shape during the pretreatment process to assay, so they are useful for wet analyses 17 as well as direct analyses (e.g., X-ray fluorescence (XRF) spectrometry, [18][19][20] γ-ray spectrometry, 21,22 and laser-induced breakdown spectroscopy 23 ). An analytical method using an iminodiacetate extraction disk, followed by direct introduction into GFAAS instrument, has also been reported for determining heavy metals at sub-μg L -1 levels in water.…”

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confidence: 99%

Determination of Diphenylarsinic Acid, Phenylarsonic Acid and Inorganic Arsenic in Drinking Water by Graphite-furnace Atomic-absorption Spectrometry after Simultaneous Separation and Preconcentration with Solid-phase Extraction Disks

et al. 2013

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A simple method of graphite-furnace atomic-absorption spectrometry (GFAAS) after solid-phase extraction (SPE) was developed for the determination of diphenylarsinic acid (DPAA), phenylarsonic acid (PAA), and inorganic arsenic (iAs) in drinking water. This method involves the simultaneous collection of DPAA, PAA, and iAs using three stacked SPE disks, i.e., an Empore SDB-XD disk (the upper layer), an activated carbon disk (the middle layer), and a Cation-SR disk loaded with Zr and Ca (ZrCa-CED; the lower layer). A 200-mL aqueous sample was adjusted to pH 3 with nitric acid and passed through the SPE disks at a flow rate of 15 mL min -1 , to concentrate DPAA on the SDB-XD disk, PAA on the activated carbon disk, and iAs on the ZrCa-CED. The As compounds were eluted from the disks with 10 mL of ethanol containing 0.5 mol L -1 ammonia solution for DPAA, 20 mL of 1 mol L -1 ammonia solution for PAA, and 20 mL of 6 mol L -1 hydrochloric acid for iAs. The eluates of DPAA, PAA, and iAs were diluted to 20, 25, and 25 mL, respectively, with deionized water, and then analyzed by GFAAS. The detection limits of As (three-times the standard deviation (n = 3) of the blank values) were 0.13 and 0.16 μg L -1 at enrichment factors of 10 and 8, respectively, using a 200-mL water sample. Spike tests with 2 μg (10 μg L -1 ) of DPAA, PAA, and iAs in 200 mL of tap water and bottled drinking water showed good recoveries (96.1 -103.8%).

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