• 분석과학
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• 제26권6호
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• pp.375-380
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• 2013

본 연구에서는 암석과 퇴적물 시료를 대상으로 이플루오린화 암모늄을 이용한 시료 분해법을 적용하여 open vessel digestion 후 유도결합 플라즈마 질량분석법(Inductively coupled plasma mass spectrometry, ICP/MS)으로 게르마늄을 분석하였다. 미국 지질조사소 표준물질 중 QLO-1, SDO-1을 사용하였고, 실제 시료로 GeoPT용 퇴적물, 현무암, 점토를 사용하였다. 휘발하여 손실되기 쉬운 것으로 알려진 게르마늄을 이플루오린화 암모늄($NH_4HF_2$) 시료 분해법을 사용함으로서 게르마늄 휘발 억제와 동시에 암석 및 퇴적물을 open vessel digestion하에서 간단하고 빠르게 분해 가능하였으며, 또한 이플루오린화 암모늄 분해법에 과산화수소를 함께 사용해도 게르마늄의 회수율에 영향을 끼치지 않았다. ICP/MS에 의한 게르마늄 분석 결과, MDL (method detection limit)은 0.015 ${\mu}g/g$, 게르마늄 회수율은 106~128% 이었다.

• Bulletin of the Korean Chemical Society
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• 제29권11호
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• pp.2237-2240
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• 2008

• Bulletin of the Korean Chemical Society
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• 제22권2호
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• pp.205-209
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• 2001

Uniformly-doped silicon thin films were fabricated by ion beam sputter deposition. The thin films had four levels of copper dopant concentration ranging between 1 ${\times}$1019 and 1 ${\times}$ 1021 atoms/cm3 . Concentrations of Copper dopants were determined by the isotope dilution inductively coupled plasma mass spectrometry (ICP-MS) to provide certified reference data for the quantitative surface analysis by secondary ion mass spectrometry (SIMS). The copper-doped thin films were dissolved in a mixture of 1 M HF and 3 M HNO3 spiked with appropriate amounts of 65 Cu. For an accurate isotope ratio determination, both the detector dead time and the mass discrimination were appropriately corrected and isobaric interference from SiAr molecular ions was avoided by a careful sample pretreatment. An analyte recovery efficiency was obtained for the Cu spiked samples to evaluate accuracy of the method. Uncertainty of the determined copper concentrations, estimated following the EURACHEM Guide, was less than 4%, and detection limit of this method was 5.58 ${\times}$ 1016 atoms/cm3.

• Bulletin of the Korean Chemical Society
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• 제34권6호
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• pp.1689-1692
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• 2013

Food is a common source of chromium (Cr) exposure. However, it is difficult to analyze Cr in complex food matrices by using inductively coupled plasma mass spectrometry (ICP-MS) because the major isotope, $^{52}Cr$, is masked by interference generated by the sample matrix and the plasma gas. Among the systems available to minimize interference, the recently developed collision-reaction interface (CRI) has a different structure relative to that of other systems (e.g., collision cell technology, octopole reaction system, and dynamic reaction cell) that were designed as a chamber between the skimmer cone and quadrupole. The CRI system introduces collision or reaction gas directly into the plasma region through a modified hole of skimmer cone. We evaluated the use of an CRI ICP-MS system to minimize polyatomic interference of $^{52}Cr$ and $^{53}Cr$ in various foodstuffs. The $^{52}Cr$ concentrations measured in the standard mode were 2-3 times higher than the certified values. This analytical method based on an ICP-MS system equipped with a CRI of helium gas was effective for Cr analysis in complex food matrices.

• 분석과학
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• 제17권5호
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• pp.438-442
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• 2004

To determine the contents of $^{99}Tc$ in the spent PWR (pressurized water reactor) nuclear fuels by ICP-MS (inductively coupled plasma-mass spectrometry), a technetium separation method using an extraction chromatographic resin (TEVA Spec resin) has been established. $^{99}Tc$ was separated from a spent PWR nuclear fuel solution by this separation procedure and its concentration was determined by ICP-MS. The result agrees well with the value calculated by the program ORIGEN 2 and also the value measured by AG MP-1 resin/ICP-MS method described in our previous paper. It can be concluded that the present separation procedure is superior to the AG MP-1 resin procedure with respect to the time required for technetium separation as well as the efficiency of decontamination from other radioactive nuclides.

• 분석과학
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• 제13권4호
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• pp.423-427
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• 2000

유도결합 플라스마 질량 분석법(ICP-MS)을 이용하여 음용수 중의 전체비소를 정량하였다. 지하수 및 간이 상수도와 시판되는 먹는 물에 질산을 첨가하여 1%로 산성화한 후에 ICP-MS로 전제비소의 함량을 분석하였다. 그 결과 음용수 중의 전체 비소는 $30{\mu}g/L$ 이하로서 수질 기준치인 $50{\mu}g/L$ 이하의 값을 나타내었다.

• 대한임상검사과학회지
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• 제41권1호
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• pp.31-36
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• 2009

The exposure of human beings to toxic trace metals (Cu, Zn) continues to be an important public health issue and concern. This study was conducted to assess the exposure to trace metals (Cu, Zn) in the general Korean population by inductively coupled plasma mass spectrometry (ICP-MS) and Atomic absorption spectrometry (AAS). Serum samples were obtained from 40 healthy volunteers. Specimens were collected in special container and we applied sample processing to minimize contamination. We used ICP-MS and AAS to analyze simultaneously the concentration of metals including copper, zinc. Distribution of trace metal levels in the general healthy population showed lower values. The results in this study can provide background data for clinical studies associated with trace metal exposure in the korean population.

• Bulletin of the Korean Chemical Society
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• 제25권4호
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• pp.447-451
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• 2004

Low and high resolution inductively coupled plasma mass spectrometry (ICP-MS) coupled with ion chromatography (IC) has been investigated for speciation of Cr(III) and Cr(VI). In particular, the interference of ArC^+formed by the carbon in a sample on the simultaneous determination of Cr(III) and Cr(VI) has been studied. In chemical speciation, this study shows that quadrupole type ICP-MS with low resolution has a limitation of simultaneous determination fo chromium species if the sample contains the carbon elements. The interference problems can be solved by high resolution ICP-MS.

• Mass Spectrometry Letters
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• 제6권3호
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• pp.75-79
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• 2015

Suitable analytical procedures for the bulk analysis of ultra-trace amounts of uranium and plutonium have been developed using multi-collector inductively coupled mass spectrometry (MC-ICP-MS). The quantification and determination of the isotopic ratios of uranium and plutonium in three simulated swipe samples, a swipe blank, and a process blank were performed to validate the analytical performance. The analytical results for the simulated swipe samples were in good agreement with the certified values, based on the measurement quality goals for the analysis of bulk environmental samples recommended by the International Atomic Energy Agency (IAEA)

• 분석과학
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• 제16권2호
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• pp.152-158
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• 2003

본 연구는 인체의 골중 납 농도를 측정하는데 필요한 시료 전처리법과 기기 분석법을 평가하기 위하여 수행되었다. 절단한 인간 사체 다리의 뼈를 상온에서의 산 분해법과 마이크로웨이브 분해법 (microwave oven method)을이용하여 납을 추출하였으며, 유도결합 플라즈마 질량분석법 (ICP-MS)과 흑연로 원자 흡수 분광 광도법 (GF-AAS)으로 납 농도를 측정하였다. 표준시료를 이용하여 회수율을 조사한 결과, 산분해 후 ICP-MS로 측정한 경우 높은 회수율을 보였으나, 산분해 후 GF-AAS로 측정한 것은 표준 농도보다 낮은 값을 보였으며, 마이크로웨이브 분해한 경우는 두 측정기기 모두 표준 농도보다 높은 값을 보였다. 뼈 시료의 경우, 산분해 후 ICP-MS로 측정한 납 농도는 GF-AAS의 값과 높은 상관성을 보였으나 (상관계수 = 0.983), GF-AAS가 ICP-MS보다 계통적으로 높은 값을 측정하였다. 마이크로웨이브 분해 역시 두 분석방법이 높은 상관성을 보였으나 (상관계수 = 0.950), 대체로 산분해에 의한 값보다 높은 농도를 보였다. 결론적으로, 상온에서 질산으로 분해 후 ICP-MS를 이용하여 측정한 것이 골중 납 농도를 결정하는데 편이성과 정확성 면에서 가장 효율적인 방법으로 보인다.