• Title, Summary, Keyword: ICP-AES

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Determination of osmium using sulfurous acid as reductant by ICP-AES (Sulfurous acid 환원제를 이용한 ICP-AES에 의한 Osmium의 정량 분석)

  • Park, Han-Seok;Kim, Kang-Jin
    • Analytical Science and Technology
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    • v.20 no.3
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    • pp.251-254
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    • 2007
  • In this study, a convenient, fast and accurate inductively coupled plasma atomic emission spectrometry (ICP-AES) method has been optimized for the determination of osmium in aqueous solutions. The method makes use of the reaction of sulfurous acid with osmium to quantitative conversion of volatile Os(VIII) to non-volatile Os(IV) in the pH range 2-10. The response was found to be stabilized immediately after sulfurous acid reacted with osmium. The precision was calculated to be 0.5-4.5 % (RSD) under various ICP-AES conditions. The detection limit was 2.5-57.7 ng/g based on $3{\sigma}$ of the blank response (n=3) using a concentric flow nebulization.

Chemical Analysis of Fly Ashes from Municipal Solid Waste Incinerators (생활폐기물 처리시설 배출 비산재의 조성분석)

  • Jang, Seong-Ki;Choi, Duk-Il;Lim, Chang-Ho;Lee, Jin-Sook
    • Analytical Science and Technology
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    • v.13 no.2
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    • pp.215-221
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    • 2000
  • Analysis of fly ashes from the MSW incinerators was carried out using XRF, ICP-MS and ICP-AES. It was found that the major elements of fly ash were Ca, K, Na, Si, Al, S, Cl and O by the XRF analysis. The XRD spectra showed that the fly ashes were mainly consisted with the chlorides, hydroxides, carbonates and also oxides of former elements. For the determination of minor elements such as Zn, Pb, Cu, Cr, and Cd, we used ICP-AES and ICP-MS after microwave digestion and the results were compared with the result of XRF.

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Determination of Boron in Steels by Precipitation Method and ICP-AES (침전법과 ICP-AES법에 의한 철강 시료 중 Boron의 분석)

  • Lim, Heon-Sung;Lee, Sueg-Geun
    • Analytical Science and Technology
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    • v.15 no.2
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    • pp.180-183
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    • 2002
  • The new useful method for the direct determination of trace boron in iron matrix was studied by applying the precipitation of $Fe(OH)_3$ and ICP-AES. Optimum pH range was 11 ~ 12.5. Linear concentration range of boron was $0.01{\sim}1.0{\mu}g/m{\ell}$ in $5000 {\mu}g/m{\ell}$ solution as iron.

Determination of calcium content and dissolution characteristics of oyster shell by ICP-AES (유도결합플라즈마 원자방출분광법을 이용한 모려 칼슘의 함량 및 용출 특성 분석)

  • Yang, Dong-Hyug;Lee, Mi-Young
    • Analytical Science and Technology
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    • v.23 no.4
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    • pp.389-394
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    • 2010
  • An ICP-AES method for determination of calcium content and dissolution characteristics of oyster shell (Ostrea gigas) has been developed and validated. Total calcium content in oyster shell was determined using ICPAES. The dissolution characteristics, which would reflect the composition of $CaCO_3$ polymorphs and calcium salts in oyster shell, were also evaluated by dissolution test. The total calcium contents ranged from 31.8 to 39.9% and the dissolution ratios varied from 62.7 to 83.6% (n=15). The determination of calcium content and dissolution characteristics by ICP-AES would provide useful information for the quality control of oyster shell.

SEM-EDS and ICP-AES Analysis of Common Food Additives (보통의 식품첨가제의 SEM-EDS와 ICP-AES 분석)

  • Hussain, Raja Azadar;Yasmin, Farida;Nawaz, Hamid;Badshah, Amin
    • Journal of the Korean Chemical Society
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    • v.54 no.5
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    • pp.551-555
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    • 2010
  • Cinnamomum Iners (Darchini, 쟈 바 계피), Elettaria Cardamomum (Elachi, 백두구, 소두구, 카다몬, 카도몬), Punica Granatum (Anar Dana, 석류), Curcuma Longa (Haldi, 터메릭, 투메릭, 심황, 울금, 울금은, 컬쿠마), Piper Nigrum (Kali Mirch, 페퍼, 페퍼블랙, 후추, 블랙 페퍼), Syzygium aromaticum (Loung, 클로브, 정향, 정향나무,), Capsicum Annum (Laal Mirch, Red Pepper), Mentha Arvensis (Pahari Podina), Curcuma Zedoaria (Kachur, 가쥬츠, 봉출, 아출, 커큐머 제도) Zingiber officinale (Adrak, 건강, 생강, 진저) and Garam Masala (Hot Spice, a mixture) have been analyzed in the present work for their metallic components with the help of SEM-EDS and ICP-AES. Minor concentrations have been determined with ICP-AES and major concentrations with the help of SEM-EDS.

Improvement of analytical methods for arsenic in soil using ICP-AES (ICP-AES를 이용한 토양 시료 중 비소 분석 방법 개선)

  • Lee, Hong-gil;Kim, Ji In;Kim, Rog-young;Ko, Hyungwook;Kim, Tae Seung;Yoon, Jeong Ki
    • Analytical Science and Technology
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    • v.28 no.6
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    • pp.409-416
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    • 2015
  • ICP-AES has been used in many laboratories due to the advantages of wide calibration range and multi-element analysis, but it may give erroneous results and suffer from spectral interference due to the large number of emission lines associated with each element. In this study, certified reference materials (CRMs) and field samples were analyzed by ICP-AES and HG-AAS according to the official Korean testing method for soil pollution to investigate analytical problems. The applicability of HG-ICP-AES was also tested as an alternative method. HG-AAS showed good accuracies (90.8~106.3%) in all CRMs, while ICP-AES deviated from the desired range in CRMs with low arsenic and high Fe/Al. The accuracy in CRM030 was estimated as below 39% at the wavelength of 193.696 nm by ICP-AES. Significant partial overlaps and sloping background interferences were observed near to 193.696 nm with the presence of 50 mg/L Fe and Al. Most CRMs were quantified with few or no interferences of Fe and Al at 188.980 nm. ICP-AES properly assessed low and high level arsenic for field samples, at 188.980 nm and 193.696 nm, respectively. The importance of the choice of measurement wavelengths corresponding to relative arsenic level should be noted. Because interferences were affected by the sample matrix, operation conditions and instrument figures, the analysts were required to consider spectral interferences and compare the analytical performance of the recommended wavelengths. HG-ICP-AES was evaluated as a suitable alternative method for ICP-AES due to improvement of the detection limit, wide calibration ranges, and reduced spectral interferences by HG.

Comparison of analytical methods for quantifying total chromium in soil using Atomic Absorption Spectrometer (AAS) and Inductively Coupled Plasma-Atomic Emission Spectrometry (ICP-AES) (토양 시료 중 Atomic Absorption Spectrometry (AAS) 및 Inductively Coupled Plasma-Atomic Emission Spectrometry (ICP-AES)를 이용한 총 크롬 분석방법 비교)

  • Lee, Hong-gil;Kim, Ji-in;Byun, Yoonjoo;Kim, Hyunkoo;Yoon, Jeong Ki
    • Journal of Soil and Groundwater Environment
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    • v.22 no.6
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    • pp.22-28
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    • 2017
  • The accuracy of analytical results in response to the use of different additives ($NH_4Cl$, KCl, $LaCl_3$) and oxidant gases was evaluated and compared by using Atomic Absorption Spectrometry (AAS). Identification of spectroscopic interferences and possible improvements in Inductively Coupled Plasma-Atomic Emission Spectrometry (ICP-AES) analysis were also discussed. The average accuracies of total chromium using Certified Reference Materials (CRMs) were found to be 72.1~94.2% in air/acetylene flame condition by AAS, and they were improved to 100.5~110.5% when the oxidants was changed to nitrous oxide rather than adding the additives. The field samples showed similar trends to CRMs, but chromium concentrations were highly variable depending on analytical conditions. The average accuracies using CRMs were estimated to be 89.3~166.1% by ICP-AES, and improved to below 121.7% after eliminating iron interference. Field samples with low chromium and high iron concentration were measured to be > 30% lower in total chromium concentrations by ICP-AES than AAS in nitrous oxide/acetylene flame. Total chromium concentrations in soil could be analyzed with better accuracy under nitrous oxide/acetylene flame by AAS because it was more effective to increase the temperature of the flame than to eliminate the chemical interference for maximizing atomization of chromium. When using ICP-AES, interference substances, total chromium levels, and analytical conditions should be also considered.

Analysis of Trace Elements in Mud Flat with Neutron Activation Analysis (NAA) and Atomic Spectroscopy (중성자 방사화 분석법과 원자 분광법을 이용한 갯벌 시료 중 미량원소 분석법에 관한 연구)

  • Nam, Sang-Ho;Kim, Min-Jae;Chung, Yong-Sam;Kim, Sun-Ha
    • Analytical Science and Technology
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    • v.15 no.6
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    • pp.521-528
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    • 2002
  • Neutron Activation Analysis (NAA) and Inductively Coupled Plasma Atomic Emission Spectrometry (ICP-AES) have been applied for the determination of inorganic elements in mud flat of south seaside in Korea. The analytical results of Al, Ca, Fe, Mg, K and Na by NAA were compared with those by ICP-AES. The results show that NAA is superior to ICP-AES for the determination of minor elements in sediment. Accordingly, NAA will play an important role in the analysis of environment samples such as mud flat and sediment having complex matrix.