• Bulletin of the Korean Chemical Society
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• 제26권12호
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• pp.1991-1995
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• 2005

Sensitivity factors of elements by a glow discharge mass spectrometry (GD-MS) were intensively investigated and compared with a laser ablation inductively coupled plasma-mass spectrometry (ICP-MS). In case of copper matrix, the sensitivity factor by GD-MS generally decreases with the increase of the mass number of element. The details are a little different between each data measured by Faraday and multiplier detectors. The factor by a multiplier detector drastically decreases with the mass increase in the region of low mass as in Faraday detector’s case, but slowly in the high mass region. On the contrast, the sensitivity factor of solution standard by a conventional ICP-MS slowly increases with the increase of elemental mass number even though there are some exceptions such as gold and also the sensitivity factor by a laser ablation ICP MS generally increases with mass number of element in the specimen of glass type. In case of steel matrix, any definite trends could not be shown in the relationship between the GD-MS’s sensitivity factor and elemental mass.

• 분석과학
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• 제11권2호
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• pp.120-124
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• 1998

지하수 중의 극미량 germanium을 ICP-MS로 신속, 정확하게 분석할 수 있었으며 질량수 74를 분석하는 것이 가장 방해영향이 적음을 알 수 있었다. 지하수 중의 약 30%만이 $0.1{\mu}g/L$ 이상의 germanium을 함유하였고, 유기 germanium을 포함하는 지하수의 존재도 확인하였다.

• Bulletin of the Korean Chemical Society
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• 제24권12호
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• pp.1805-1808
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• 2003

The simultaneous determination of As(III), As(V), and DMA has been performed by ion chromatography (IC) coupled with inductively coupled plasma-mass spectrometry (ICP-MS). The separation of the three arsenic species was achieved by an anionic separator column (AS 7) with an isocratic elution system. The separated species were directly detected by ICP-MS as an element-selective detection method. The IC-ICP-MS technique was applied for the determination of arsenic species in a NIST SRM 1643d water sample. An As(III) only was detected in the sample. The detection limits of As(III), As(V) and DMA were 0.31, 0.45, and 2.09 ng/mL, respectively. It was also applied for the determination of arsenic species in a human urine obtained by a volunteer, and three arsenic species were identified. The determination of total As in human urines that were obtained from 25 volunteers at the different age was also carried out by ICP-MS.

• 분석과학
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• 제16권1호
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• pp.82-89
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• 2003

Isotope dilution mass spectrometry (IDMS) was applied to the determination of Ni, Cr, Mo in low alloy steel reference materials. The Mo isotope ratio measurement was performed by dynamic reaction cell inductively coupled plasma mass spectrometry (DRC-ICP/MS) using ammonia as a reaction cell gas. In the case of Ni and Cr measurement, all data were obtained at medium resolution mode (m/${\Delta}m=3000$) of double focusing sector field high resolution inductively coupled plasma mass spectrometry (HR-ICP/MS). For the method validation of the technique was assessed using the certified reference materials such as NIST SRM 361, NIST SRM 362, NIST SRM 363, NIST SRM 364, NIST SRM 36b. This method was applied to the determination of Ni, Cr and Mo in low alloy steel sample (CCQM-P25) provided by NMIJ for international comparison study.

• Mass Spectrometry Letters
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• 제15권3호
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• pp.149-157
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• 2024

The objective of the present study was to validate the analytical procedure for the quantitative determination of four trace metals (As, Cd, Pb, and Hg) in extracted fish lipids using Inductively Coupled Plasma-Mass Spectrometry, ICP-MS. The extracted lipids using Bligh and Dyer method were digested by means of microwave-assisted acid digestion and introduced into an optimized ICP-MS instrument. The validation of the analytical method was carried out in accordance with the international standards and guidelines outlined in the European Pharmacopeia (2022), which included specificity, selectivity, linearity, limit of detection, limit of quantification, precision, and accuracy. The linearity ranges of the calibration curves were R² > 0.999, while the relative standard deviation (%RSD) for precision was within 5%. All targeted trace metals have shown mean recoveries between 88.0%-114.9%. The obtained LOD and LOQ values for this analytical protocol indicated the ability to detect and quantify of As, Cd, Pb, and Hg at trace levels. The overall validation confirms the described analytical method was appropriate for routine analyses of As, Cd, Pb, and Hg in fish lipids.

• 약학회지
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• 제37권6호
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• pp.577-580
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• 1993

The trace elements in liver, kidney and testicle of rats were analysed by Inductively Coupled Plasma-Mass Spectrometer(ICP-MS). Ten elements(Cr, Ni, Cu, Zn, Mo, Cd, Pb, Bi, Th, U) were determined simultaneously and the detection limit of each elements was lower than ppb level.

• 광물과 암석
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• 제35권4호
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• pp.507-520
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• 2022

지질과학 분야에서 암석의 생성 시기, 지각과 맨틀 진화연구의 기초자료로 활용되는 Sr 동위원소비는 열이온화 질량분석기(thermal ionization mass spectrometry, TIMS) 혹은 다검출기 유도결합 플라즈마 질량분석기(multi-collector plasma ionization mass spectrometry, MC-ICP-MS)와 같은 질량분석기를 이용하여 측정할 수 있다. 이 기술보고에서는, Sr 동위원소비 측정시, 원소의 불완전한 화학적 분리가 Sr 동위원소비의 참값 (true value)에 어떤 영향을 미치는지를 비교하였다. 실험에는 상업용 레진, NBS987(NIST SRM987) Sr 동위 원소 표준물질 그리고 일본지질조사소의 암석표준시료 JG1a, JB3, JA1를 이용하였다. 비교실험 결과, NBS987 Sr 동위원소 표준시료, 일본지질조사소의 암석표준시료 JG1a, JB3, JA1 모두 불완전한 분리에 의해 Rb이 남아있는 경우 ⁸⁷Sr/⁸⁶Sr의 측정값이 변하는 것이 명확하게 관찰된다. 이는 질량분석기 특히 MC-ICP-MS로 동위 원소비를 측정하고자 하는 경우, 동종동위원소의 간섭에 대한 보정에도 불구하고 측정값은 참값에서 벗어나므로 완전한 분리가 중요한 인자임을 지시해준다. 그러므로 MC-ICP-MS를 이용한 Sr 동위원소비 측정결과를 보고할 때는, 동종동위원소에 의한 영향을 판단할 수 있도록 Sr의 동위원소 전체의 측정강도와 더불어 ⁸⁵Rb의 측정강도도 함께 보고돼야 할 것이다.

• 분석과학
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• 제11권4호
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• pp.311-315
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• 1998

Ultra trace metal impurities of high-purity sulfuric acid for semiconductor process have been determined in the concentration of lower than ppb (ng/g) level using high resolution inductively coupled plasma mass spectrometer (HR-ICP-MS).The acid samples were evaporated and concentrated by the factor of 20. No clement in the acids exceeded 1ppb level and most of the clements were determined below 10ppt (pg/g). Elements without spectral interference in mass spectrum, such as In, V, Mn, etc, were determined in the concentration of below 1 ppt level The recoveries in the range of 72% to 127.2% for 0.5 ppb spiked sample were obtained.

• Ocean and Polar Research
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• 제25권1호
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• pp.53-62
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• 2003

Inductively coupled plasma mass spectrometry (ICP-MS) is useful instrument for determining abundance of rare earth elements, due to very low detection limits and rapid data acquisition. In this article, two methods are used for decomposition of alkaline rocks; close vessel acid digestion and $Na_2Co_3$ fusion. The two analytical results show good agreements. Considering total dissolved solids and detection limits, the most adequate dilution factor is 5,000 times. Polyatomic ion interferences during analysis can give rise to Inaccuracies. After correction from oxide and hydroxide interference, the analytical result show 20-30% decrease for Gd and Tm, 10-20% decrease for Tb and Er. In comparing the analytical results from KORDI with other institutes, most rare earth elements abundance show good agreements except Lu.

• 분석과학
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• 제8권4호
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• pp.405-410
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• 1995

A study on elemental speciation of trace metals in lake water (Lake Biwa in Japan) has been carried out by a size exclusion chromatography (SEC) / inductively coupled plasma mass spectrometry (ICP-MS) system. Before analysis, the water sample was preconcentrated with a ultrafiltration technique, where the large molecules with molecular weight larger than 10,000 were concentrated. Then the preconcentrated water samples (500-1000 fold) were analyzed by a SEC/ICP-MS system. Most trace metals were found at the UV absorption peaks corresponding to the molecular weights of ca. 300,000 and 10,000-50,000, where trace metals were on-line detected by ICP-MS. The results suggest that many of trace metals exist as the large organic molecules-metal complexes in natural water.