• Title, Summary, Keyword: inductively coupled plasma-mass spectrometry

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Recovery of Copper from Spent Photovoltaic Ribbon in Solar Module (폐태양전지(廢太陽電池)용 솔라리본으로부터 구리회수(回收)에 관한 연구(硏究))

  • Lee, Jin-Seok;Jang, Bo-Yun;Kim, Joon-Soo;Ahn, Young-Soo;Kang, Gi-Hwan;Wang, Jei-Pil
    • Journal of the Korean Institute of Resources Recycling
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    • v.22 no.5
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    • pp.50-55
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    • 2013
  • The recovery of copper from spent photovoltaic ribbon was conducted using thermal treatment method at the range of temperature of $300^{\circ}C$ to $600^{\circ}C$ under inert atmosphere. The coating layer consisted of lead of 68.99 wt.% and tin of 31.21 wt.% was melted down at elevated temperatures and was collected on the bottom of crucible. The chemical composition of copper ribbon after thermal treatment was analyzed by ICP-MS (Inductively coupled plasma mass spectrometry) and the purity of copper was found to be obtained up to about 96 wt.% regardless of temperatures. The cross-sectional area of the specimen was also examined by SEM (scanning electron microscopy) and EDX (energy dispersive X-ray microscopy).

Study of improving precision and accuracy by using an internal standard in post column isotope dilution method for HPLC-ICP/MS (후 컬럼 동위원소 희석법을 적용한 HPLC-ICP/MS에서의 정량분석에서 내부 표준물을 이용한 정확도와 정밀도의 개선연구)

  • Joo, Mingyu;Park, Myungsun;Pak, Yong-Nam
    • Analytical Science and Technology
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    • v.27 no.3
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    • pp.140-146
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    • 2014
  • An internal standard was used in PCID (post column isotope dilution) to improve the accuracy and precision in quantification of various chemical species. The error occurring in the column was the largest in HPLC-ICP/MS (high performance liquid chromatography-inductively coupled plasma/mass spectrometry) when PCID and other traditional quantification methods were compared with each other. Internal standard was effective in correcting the loss of sample in the column to improve accuracy and precision. When applied to SeMet, using MeSecys or $Se^{4+}$ as an internal standard, relative errors were reduced from 31% and 13% to less than 1%, while standard deviations were reduced from 5.1% and 6.9% to 1.5% and 0.2%, respectively. Positive aspects of using an internal standard in PCID were compared with other quantitative techniques and discussed in detail.

Analysis of germanium in rock and sediment by ICP/MS after ammonium bifluoride(NH4HF2) digestion (이플루오린화 암모늄 시료분해 및 ICP/MS에 의한 암석 및 퇴적물 중 게르마늄 분석)

  • Eum, Chul Hun;Choi, Won Myung
    • Analytical Science and Technology
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    • v.26 no.6
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    • pp.375-380
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    • 2013
  • Ammonium biflouride ($NH_4HF_2$) digestion was studied for germanium analysis in rock and sediment by inductively coupled plasma mass spectrometry (ICP/MS). QLO-1 and SDO-1 are used for reference materials from USGS. Sediment, basalt and ball clay for GeoPT were chosen as real samples. The loss of germanium in open vessel digestion was well known which can be caused by easy transformation to volatile compounds. But ammonium bifluoride digestion could suppress loss of germanium in open vessel digestion. Germanium recovery was not influenced by hydrogen peroxide with ammonium bifluoride digestion. Furthermore, the new method was simple and rapid in germanium analysis by ICP/MS. MDL(method detection limit) was 0.015 ${\mu}g/g$ and germanium recovery was 106~128%.

Determination of Metal Levels in Shamma (Smokeless Tobacco) with Inductively Coupled Plasma Mass Spectrometry (ICP-MS) in Najran, Saudi Arabia

  • Brima, Eid I.
    • Asian Pacific Journal of Cancer Prevention
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    • v.17 no.10
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    • pp.4761-4767
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    • 2016
  • Objective: The use of Shamma (smokeless tobacco) by certain groups is giving rise to health problems, including cancer, in parts of Saudi Arabia. Our objective was to determine metals levels in Shamma using inductively coupled plasma mass spectrometry (ICP-MS). Methods: Thirty-three samples of Shamma (smokeless tobacco) were collected, comprising four types: brown Shamma (n = 14.0), red Shamma (n = 9.0), white Shamma (n = 4.0), and yellow Shamma (n = 6.0). All samples were collected randomly from Shamma users in the city of Najran. Levels of 11 elements (Al, As, Cd, Co, Cr, Cu, Li, Mn, Ni, Pb, and Zn) were determined by ICP-MS. Results: A mixed standard (20 ppb) of all elements was used for quality control, and average recoveries ranged from 74.7% to 112.2%. The highest average concentrations were found in the following order: Al ($598.8-812.2{\mu}g/g$), Mn ($51.0-80.6{\mu}g/g$), and Ni ($23.2-53.3{\mu}g/g$) in all four Shamma types. The lowest concentrations were for As ($0.7-1.0{\mu}g/g$) and Cd ($0.0-0.06{\mu}g/g$). Conclusions: The colour of each Shamma type reflects additives mixed into the tobacco. Cr and Cu were showed significant differences (P < 0.05) among Shamma types. Moreover, Pb levels are higher in red and yellow Shamma, which could be due to use (PbCrO4) as yellow colouring agent and lead tetroxide, Pb3O4 as a red colouring agent. The findings from this study can be used to raise public awareness about the safety and health effects of Shamma, which is clearly a source of oral exposure to metals.

Determination of Trace Elements in Atmospheric Dust by X-Ray Fluorescence Spectrometry(II) : X-ray Fluorescence Spectrometric Determination of Light Elements (형광 X선에 의한 대기분진중의 미량성분의 측정(II): 대기부유분진 중 경원소의 X-선 형광분석)

  • 이용근;박현미;이동수;이보경
    • Journal of Korean Society for Atmospheric Environment
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    • v.9 no.3
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    • pp.247-254
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    • 1993
  • A simple and direct method is developed for the determination of light Elements in atmospheric particulates by X-ray fluorescence spectrometry. Calibration standards for the light elements such as Al, Mg, K, Ca, etc are prepared by filtering real atmospheric particulates over variable time and subsequently standardizing them by Inductively Coupled Plasma-Mass Spectrometry(ICP-MS) or Atomic Absorption Spectrophotometry(AAS) analysis. The validity of this calibration method is tested by analyzing more than 100 aerosol samples, collected at urban(Seoul) and rural(Padori) sites over a two year period with this method and then comparing them with those by other accuracy proven methods such as AAS or ICP-MS: for all metals tested the results showed reasonably good agreements (R $\geq$ 0.95).

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The Surface Damage of SBT Thin Film Etched in $Ar/CF_{4}/Cl_{2}$ Plasma ($Ar/CF_{4}/Cl_{2}$ 유도결합 플라즈마에 의한 SBT 박막의 표면 손상)

  • 김동표;김창일;이철인;김태형;이원재;유병곤
    • Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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    • pp.26-29
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    • 2001
  • SrBi$_2$Ta$_2$$O_{9}$ thin films were etched at high-density C1$_2$/CF$_{4}$/Ar in inductively coupled plasma system. The etching of SBT thin films in C1$_2$/CF$_{4}$/Ar were chemically assisted reactive ion etching. The maximum etch rate was 1300 $\AA$/min at 900W in Cl$_2$(20)/CF$_4$(20)/Ar(80). As f power increase, radicals (F, Cl) and ion(Ar) increase. The influence of plasma induced damage during etching process was investigated in terms of the surface morphology and th phase of X-ray diffraction. The chemical residue was investigated with secondary ion mass spectrometry.y.

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Determination of La in $U_3Si/Al$ Spent Nuclear Fuel by Ion Chromatography-Inductively Coupled Plasma-Mass Spectrometry (Ion Chromatography-Inductively Coupled Plasma-Mass Spectrometry에 의한 $U_3Si/Al$ 사용후핵연료 중 La의 분리 및 정량)

  • Han, Sun Ho;Choi, Kwang Soon;Kim, Jung Suk;Jeon, Young Shin;Park, Yang Soon;Jee, Kwang Yong;Kim, Won Ho
    • Analytical Science and Technology
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    • v.13 no.5
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    • pp.601-607
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    • 2000
  • Lanthanum has been used as one of the burnup monitor in spent nuclear fuel. $U_3Si/Al$ spent nuclear fuel contains small amount of La in high concentration of U and Al. Therefore, chemical separation of La is required to remove matrix elements. At first, ion chromatography (IC) and inductively coupled plasma systems were installed in radiation shielded glove box to handle the radioactive samples. Retention behavior of uranium, aluminum, lanthanum and some interesting fission products (Sr, Zr, Y, Mo, Ru, Pd, Rh, Cs, Ba, Ce, Pr, Nd, Sm, Eu and Cd) was investigated using the CG10 column and ${\alpha}$-HiBA eluent. As all elements were eluted earlier than lanthanum in 0.2 M ${\alpha}$-HiBA eluent, a portion of U and Al was directly passed to waste using a three way valve between the column and the nebulizer. Thus it was possible to determine the lanthanum in a high concentration of U and Al matrix. Retention time of La was about 12 minutes in this separation condition. Optimum range for the determination of La in $U_3Si/Al$ spent nuclear fuel was $1-10{\mu}g/L$ (ppb) with this system and detection limit was $0.25{\mu}g/L$ in case of $200{\mu}L$ of sample volume.

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Improvement of Measurement Precisions for Uranium Isotopes at Ultra Trace Levels by Modification of the Sample Introduction System in MC-ICP-MS

  • Park, Ranhee;Lim, Sang Ho;Han, Sun-Ho;Lee, Min Young;Park, Jinkyu;Lee, Chi-Gyu;Song, Kyuseok
    • Mass Spectrometry Letters
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    • v.7 no.2
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    • pp.50-54
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    • 2016
  • Multi-collector inductively coupled plasma mass spectrometry (MC-ICP-MS) is currently used in our laboratory for isotopic and quantitative analyses of nuclear materials at ultra-trace levels in environmental swipe samples, which is a very useful for monitoring undeclared nuclear activities. In this study, to improve measurement precisions of uranium isotopes at ultratrace levels, we adopted a desolvating nebulizer system (Aridus-II, CETAC., USA), which can improve signal sensitivity and reduce formation of uranium hydride. A peristaltic pump was combined with Aridus-II in the sample introduction system of MC-ICP-MS to reduce long-term signal fluctuations by maintaining a constant flow rate of the sample solution. The signal sensitivity in the presence of Aridus-II was improved more than 10-fold and the formation ratio of UH/U decreased by 16- to 17- fold compared to a normal spray chamber. Long-term signal fluctuations were significantly reduced by using the peristaltic pump. Detailed optimizations and evaluations with uranium standards are also discussed in this paper.

A Study of the Potential Interference of ArC+ on the Direct Determination of Trivalent Chromium and Hexavalent Chromium Using Ion Chromatography Coupled with ICP-MS

  • Nam, Sang-Ho;Park, Young-Il;Kim, Jae-Jin;Han, Sun-Ho;Kim, Won-Ho
    • Bulletin of the Korean Chemical Society
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    • v.25 no.4
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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.

Determination of Germanium in Spring Waters by Inductively Coupled Plasma Mass Spectrometry (ICP-MS에 의한 지하수 중의 Germanium 분석에 관한 연구)

  • Park, Kyung Su;Song, Seong Yeon;Shim, Ue Sup;Kim, Sun Tae
    • Analytical Science and Technology
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    • v.11 no.2
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    • pp.120-124
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    • 1998
  • A rapid and accurate determination method of ultra-trace amounts of germanium in spring water by ICP-MS has been developed. Mass number 74 was not only the best mass but also the smallest mass interference. Only 30% of water samples contain germanium more than $0.1{\mu}g/L$, and a few of them has organogermanium species.

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