• Title/Summary/Keyword: 원소수은

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Development of soil certified reference material for determination of the hazardous elements (유해원소 측정용 토양 인증표준물질 개발)

  • Kim, In-Jung;Min, Hyung-Sik;Suh, Jung-Ki;Han, Myung-Sub;Lim, Myung-Chul;Kim, Young-Hee;Shin, Sun-Kyoung;Cho, Kyung-Haeng
    • Analytical Science and Technology
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    • v.23 no.5
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    • pp.485-491
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    • 2010
  • A certified reference material (CRM) of KRISS 109-03-SSD was developed for the analysis of hazardous elements in soil. The target elements were As, Cd, Cr, Cu, Hg, Ni, Pb, Zn being regulated by the Soil Environment Conservation Act. Starting material was collected from tailing dump of an unworked tungsten mine at Sangdong (Gangwon-do, Korea). The starting material under-went through a series of fabricating process steps of screening, drying, grinding, sieving, blending, bottling, sterilization and was certified according to the ISO Guide 35. Isotope dilution-inductively coupled mass spectrometry (ID-ICP/MS) and instrumental neutron activation analysis (INAA) were used for the measurement. Homogeneity was tested according to ISO 13528 annex B. The certified values were determined using the results from two different methods or from two independent measurements using a method. Finally, certified values of seven elements of arsenic, cadmium, chromium, copper, lead, nickel and zinc were determined. Mercury did not satisfied the criteria of homogeneity and the result would be provided for information only, together with iron and tungsten. It was also studied, the extractable fraction of elements by aqua regia according to the ISO 11466 protocol being frequently studied for the purpose of environmental monitoring. It was performed as a inter-laboratory study by 6 laboratories of a public institute and universities. Standard deviation among the laboratories was much bigger than the uncertainty of the certified value. The result of inter-laboratory study on the extractable fraction will be provided for information, only.

Monitoring Heavy Metals in Meat and Meat Products (식육 및 그 가공품의 중금속 모니터링)

  • Hwang, Tae-Ik;Ahn, Tae-Hyun;Kim, Eun-Jung;Lee, Jung-Ah;Kang, Myoung-Hee;Jang, Young-Mi;Kim, Mee-Hye
    • Korean Journal of Food Science and Technology
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    • v.43 no.5
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    • pp.525-531
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    • 2011
  • This study was conducted to examine the contents of lead (Pb), cadmium (Cd), arsenic (As), and mercury (Hg) in meat and meat products in Korea. The contents of Pb, Cd, As, and Hg in 466 samples of beef, pork, chicken, duck, ham, and sausage were measured using inductively coupled plasma mass spectrometry or a mercury analyzer. Wet ashing and microwave method were compared, and the recovery and reproducibility of the microwave method were better than those of wet ashing for meat and meat products. The recovery of the microwave method was 98.1% for Pb, 104.6% for Cd, and 103.4% for As, respectively. The best result was obtained through digestion using an acid mixture ($HNO_3$/$H_2O_2$, 6:2). Hg content was measured using a mercury analyzer. As a result, the contents of Hg and Cd in samples were lower than those of Pb and As. The average contents of Pb were 0.009 mg/kg in beef, 0.010 mg/kg in pork, 0.006 mg/kg in chicken, 0.007 mg/kg in duck, 0.005 mg/kg in ham, and 0.009 mg/kg in sausage. The average Cd contents were 0.0004 mg/kg in beef, 0.0004 mg/kg in pork, 0.0005 mg/kg in chicken, 0.0012 mg/kg in duck, 0.0015 mg/kg in ham, and 0.0019 mg/kg in sausage. The average As contents were 0.016 mg/kg in beef, 0.004 mg/kg in pork, 0.021 mg/kg in chicken, 0.010 mg/kg in duck, 0.014 mg/kg in ham, and 0.018 mg/kg in sausage. The average Hg contents were 0.713 ${\mu}g/kg$ in beef, 0.902 ${\mu}g/kg$ in pork, 0.710 ${\mu}g/kg$ in chicken, 0.796 ${\mu}g/kg$ in duck, 1.141 ${\mu}g/kg$ in ham, and 1.052 ${\mu}g/kg$ in sausage. Based on the results of the National Health and Nutrition Survey 2005, the levels of dietary exposure to heavy metal contaminants in meat and meat products were compared with the provisional tolerable weekly intake(PTWI) established by the Joint FAO/WHO Expert Committee on Food Additives. The average dietary exposure of the general population from meat and meat products was 0.03-0.2% of PTWI for Pb, Cd, As, and Hg, which indicates a safe level for public health at present.

Determination of Bromine, Arsenic, Mercury, and Selenium in Plant by Neutron Activation Analysis (방사화분석법에 의한 식물 중의 Br, As, Hg, Se의 정량)

  • Chun, Sea-Yull
    • Korean Journal of Food Science and Technology
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    • v.3 no.3
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    • pp.144-149
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    • 1971
  • The sensitive technique of activation analysis is well suited for this study since the elements such as As, Br, and Se in tobaccoes are expected to be high concentration. As, Br, and Hg were determined by Bethge destruction method and subsequent neutron activation analysis. $^{77m}Se$ was also by non-destruction activation analysis. The quantities of the element determined in Korean tobaccoes are given as follows in ppm: As, 0.65 ppm. Hg, 0.74 ppm. Se, 1.18 ppm. Br, 7.1 ppm. From the date given it seems that Korean tobaccoes and foreign tobaccoes contained considerably high concentration of selenium and mercury.

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Absorption of Heavy Metals of Waste Leachate Using by Fast Growing Trees(II) (속성수를 이용한 쓰레기 매립지 침출수의 오염물질 흡수제거(II))

  • 우수영
    • Korean Journal of Agricultural and Forest Meteorology
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    • v.5 no.1
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    • pp.36-42
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    • 2003
  • To identify the rapacity of waste leachate absorption in Populus euramericana and Betula platyphylla var, japonica, four different treatments were applied to seedlings: leachate solution (100% leachate), 50% dilution (50% leachate: 50% water, v/v) and 25% dilution, (25% leachate: 75% water, v/v) were applied to these two species. After the experiment, concentrations of heavy metals in tree parts were analyzed by an Inductively Coupled Plasma emission spectrometer (ICP). treatment with waste leachate significantly stimulated both Populus euramericana and Betula platyphylla var. japonica biomass production relative to the water control. In addition, these species showed good absorption capacity of As, Co, Hg and Ni elements. The results of this study suggested that these two species can absorb the toxic materials through their roots and transport them to stems or leaves.

Analysis of Trace Metal in Agricultural Products (농산물 중의 미량금속함량 분석)

  • 박정숙;나환식
    • The Korean Journal of Food And Nutrition
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    • v.13 no.6
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    • pp.595-601
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    • 2000
  • The seven trace metals contents of agricultural products in Kwang-ju were investigated to provide the basic data for its residual limits. Ten kinds of agricultural products (onion, welsh onion, garlic, lettuce, cabbage, pepper, spinach, radish, pear, peach) collected within from Kwang-ju in 1999 were analyzed by Mercury Analyzer for mercury. Inductively Coupled Plasma spectrometer and Atomic Absorption spectrophotometer equipped with Vapor Generation Accessory for Cu, Cd, Mn, Pb, Zn and As. Hg contents were not detected in all samples and As content were detected N.D. ∼0.005 ppm. Cd and Pb contents were detected N.D ∼0.088 ppm and N.D.∼0.096 ppm, respectively, Cu, Mn and Zn contents were 0.109∼1.072 ppm. 0.829∼6.195 ppd and 0.731∼6.176 ppm, respectively. The trace metal concentrations of the agricultural products in Kwang-ju called clean area were within the background level which growth is facilitated.

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Development of Analytical Techniques for Human Serum and Urine by Using Glow Discharge (글로우 방전을 이용한 혈청과 뇨의 분석기술 개발)

  • Lee, Sang Chun;Choi, Kyung-Soo;Son, Eun-Ho;Sim, Young-Jin
    • Analytical Science and Technology
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    • v.11 no.3
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    • pp.167-173
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    • 1998
  • An electrothermal vaporization-hollow cathode glow discharge-atomic emission spectrometer(ETV-HCGD-AES) has been developed for detecting heavy metals in human serum and urine samples. Fisrt of all, we designed a glow discharge cell for atomic emission spectrometry and its analytical performance was studied with the standard reference materials(SRMs) purchased from the NIST. Practically, the ETV-HCGD-AES demonstrated better instrumental sensitivity and selectivity for detecting Hg and Pb in the SRMs, serum and urine, than ICP-OES since the ETV-HCGD-AES was not required the complicate sample digestion procedure, which improved sample transportation efficiency.

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Accumulation of Heavy Metals in Forest Birds from Korea - Especially in Mt. Chiri - (한국산(韓國產) 산림조류(山林鳥類)의 중금속(重金屬) 축적(蓄積) - 지리산지역(智異山地域)을 중심(中心)으로 -)

  • Choi, Jai Sik;Kim, Jai Saing;Kim, Jong Kab
    • Journal of Korean Society of Forest Science
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    • v.80 no.2
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    • pp.177-186
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    • 1991
  • The heavy metal contents accumulated in the birds organ were analyzed by use of 10 species of birds to investigate the environmental pollution of the birds inhabited in Mt. Chiri. Heavy metal concentrations in bird organs, e.g. muscle, liver, kidney, lung and heart were analyzed for 10 species of the birds. 1. Contents of some heavy metal elements such as Fe, Zn, Cu and Mn were similar level compared with any other district. But contents of some heavy metal elements shch as Pb, Cd and Hg were comparatively lower level than those in any other district. 2. The contents of heavy metal accumulation in the muscle of the bird organs were detected much more from the migrants than the resident birds ; the resident bird, Phasianus colchicus were detected to contain $0.01{\mu}g/g$ og Hg and $0.05{\mu}g/g$ of Cd, but in the migrant bird, Turdus dauma they were detected to contain $0.17{\mu}g/g$ of Hg and $0.08{\mu}g/g$ of Cd. 3. The contents of lead were scarcely detected in the muscle of 10 species of birds, but it was highly detected from the hunting (meat-eating) birds such as Phasianus colchicus ($0.17{\mu}g/g$) and Streptopelia orientalis ($0.11{\mu}g/g$). Generally, the concentration of heavy metals of the analyzed birds was more mercury than Cadmium.

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Analysis by Environmental Factor of Similar Closed Non-sanitary Landfills (사용종료된 유사비위생 매립지들의 환경인자 분석)

  • Lee, Byungchan;Lee, Minhee;Park, Sangchan;Jeong, Seonki;Han, Yangsu;Yeon, Ikjun
    • Journal of the Korean GEO-environmental Society
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    • v.10 no.6
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    • pp.27-33
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    • 2009
  • In this study, it was analysed physical characteristics, TS, moisture, C/N ratio, leaching test, and element analysis in landfill wastes of 10 years old without landfill pretreatment. The Organic material content was 7.2%~23.5% and soil was the main inorganic materials which it's rate was 54.1%~71.0%, in landfill wastes. The results of TS, VS, and moisture were represented 51.5%~68.1%, 23.6%~56.1%, 32.0%~48.4%, respectively. The analysis of hazardous materials did not indicate Hg, $Cr^{+6}$, CN, Organic Phosphorus, TCE and PCE, however the Pb of leaching materials showed 0.023~0.092 mg/L, which was the highest. As the result of the element analysis, C was 47.74%~56.72%, N was 4.09%~9.92%, the C/N ratio was 5.76~12.57 and the result of soils around landfill was the highest heavy material, Pb, 2.465 mg/kg~10.251 mg/kg. The objectives of this paper are to investigate states, stabilization of these closed landfills and to gain suitable data for post-closure care using some parameters through analysis of landfill environment.

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Investigation on Contents of Heavy Metals and Parasites of the Dropwort(Oenanthe javanica) cultivated in Chollanamdo (전라남도내 미나리의 중금속 함량 및 기생충에 대한 조사)

  • Heo, Nam-Chil;Kim, Choong-Mo;Park, Sook;Na, Hwan-Sik
    • Korean Journal of Food Science and Technology
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    • v.32 no.4
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    • pp.970-973
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    • 2000
  • Heavy metal contents and parasite egg examination for the safety evaluation of dropwort(Oenanthe javanica) from the inside of Chonnam province(5 regions) and suburbs of Kwang-ju(1 region) were investigated. The contents of heavy metals(Hg, Pb, As, Cd, Mn, Zn, Cu) were determined by the Atomic Absorption Spectrophotometer and parasite eggs were examined to various internalparasites(F. hepatica, C. sinesis, G. lamblia, Cryptosporidium, A. lumbricoides and A. duodenale). First, Hg and As were detected in trace level and $0.003{\sim}0.01\;ppm$. Pb was not detected in all samples and Cd contents of dropworts were detected $0.014{\sim}0.087\;ppm$. The contents of 4 kinds of heavy metals(Hg, As, Pb and Cd) in dropworts cultivated in various regions(6 regions) were not detected or trace levels. Therefore, dropworts cultivated in Chonnam province and suburbs of Kwang-ju were free from contamination of heavy metals. Moreover, the result of parasite egg examination(Trematoda, Protozoa and Nematoda) was not detected in all samples.

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Hazardous Characteristics of metals in Bottom Ash from Municipal Solid Waste Combustors(MSWC) of Korea (도시폐기물 소각로에서 발생되는 바닥재중의 금속류 유해특성에 관한 연구)

  • Chung, David;Kim, Yu-Nung;Yun, Young-Ja;Kim, Yoen-Ho
    • Analytical Science and Technology
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    • v.14 no.3
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    • pp.253-258
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    • 2001
  • This is a research on hazardous characteristics and potentials of bottom ash from 9 municipal solid waste combustors(200 tons/day) of Korea by the test methods of leaching and content. The leaching method was performed by Waste Test Method of Korea. In case of the content method, mercury was determined by thermal decomposition amalgamation atomic absorption spectrometer, other 9 elemets including Pb, which were pretreated by U.S.EPA SW-846 3050B method, were determined by flame atomic absorption spectrometer(FAAS) or inductively coupled plasma atomic emission spectrometer(ICP-AES). Results of leaching test showed that Pb and Cu was main pollutants. It was interested that the distribution rate of metals' contents of each combustors was similar and the rank of concentration was Fe>Zn>Cu>Mn>Pb>Cr>As>Cd>Hg.

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