Environmental Sampling and Analysis for Metals - Chapter 3 ppt

... Learning. Fax 800 73 0-2 215.) © 2002 by CRC Press LLC 46 Environmental Sampling and Analysis for Metals Metals can form lipid-soluble organo-metallic ions, involving Hg, As, Sn, Tl, and Pb, capable ... Press LLC 54 Environmental Sampling and Analysis for Metals 3. 4 .3. 8 Platinum (Pt) Oral exposure is unknown. After inhalation, lung clearance is rather slow, a...

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... LLC 218 Environmental Sampling and Analysis for Metals 12. If the analysis request is for suspended and dissolved metal determination, the sample should be filtered prior to preservation and treated ... Press LLC 206 Environmental Sampling and Analysis for Metals • Before sampling, check the constant pumping volume. • After returning from the field, check oper...

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... Solution, 33 ,33 3 mg/l Total Hardness, as CaCO 3 Transfer 12.4860 g of anhydrous, primary-standard calcium carbonate (CaCO 3 ) into a 1-liter volu- metric flask. Add about 200 ml of DI water and slowly ... series if the lab- oratory can meet the performance criteria. 18.1 .3. 4 EPA Methods 602, 8020, 8021 These methods may include analysis of xylene and methyl-tert-butyl-ether (MT...

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... hydroxide precipitates and set- tles to form rust on the surface of the iron. © 2002 by CRC Press LLC 34 Environmental Sampling and Analysis for Metals Inadequate iron intake causes iron-deficiency anemia, ... Silver has FIGURE 2.4 Formula of vitamin B 12 . © 2002 by CRC Press LLC 16 Environmental Sampling and Analysis for Metals alkaline earth metal is less reactiv...

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... LLC 66 Environmental Sampling and Analysis for Metals In 19 93, the MCL and MCLG for atrazine were revised at the request of Ciba-Geigy, the manufac- turer of this chemical ( Fed. Reg., 56, 36 00, 30 ... amine Nitroaromatics Nitrobenzene 2,4-Dinitrotoluene 2,6-Dinitrotoluene Phenols 2,4-Dimeethylphenol Nitrophenols 2-Nitrophenol 4-Nitrophenol 2,4-Dinitrophenol 4,6-Dinitro- o...

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... Press LLC 110 Environmental Sampling and Analysis for Metals digestion or another method is used for sample preparation (see Chapter 15), carry standards through the same procedure used for samples. The ... Add 2 ml of this stock solution to each 100-ml standard and sample prior to analysis. © 2002 by CRC Press LLC 120 Environmental Sampling and Analysis for M...

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... LLC 122 Environmental Sampling and Analysis for Metals 8.2 .3 REAGENTS 8.2 .3. 1 Air The air used should be cleaned and dried through a suitable filter to remove oil, water, and other for- eign substances. ... 0.1–10 Mo 31 3 .3 N–Ac 0.1 0.5 1–20 Na 589.0 A–Ac 0.02 0.015 0. 03 1 Ni 232 .0 A–Ac 0.02 0.15 0 .3 10 Os 290.9 N–Ac 0.08 1 — Pb a 2 83. 3 A–Ac 0.05 0.5 1–20 Pt 265....

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... Press LLC 174 Environmental Sampling and Analysis for Metals 12.5 REAGENTS AND STANDARDS 12.5.1 C HEMICALS, STANDARDS, AND REAGENTS • Chemicals and reagents should be ultra-high-purity grades, ... 100 Sb 206. 83 30 217.58 10.0 100 As 1 93. 70 50 189.04 b 10.0 100 Ba 455.40 2 4 93. 41 1.0 50 Be 31 3.04 0 .3 234 .86 1.0 10 B 249.74 5 249.68 1.0 50 Cd 226.50 4 214.44 2.0 50...

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... Preparation for Metals Analysis 235 following metals: Be, Cd, Cr, Co, Pb, Mo, Tl, and V. (Digestion and GrAAS analysis for As, Se, and Ag are different. The digestion procedure for As and Se is ... Press LLC 232 Environmental Sampling and Analysis for Metals leaching with hot 1+1 HCl for a minimum of 2 h and then with hot 1+1 HNO 3 for a minimum of 2...

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... Press LLC 31 8 Environmental Sampling and Analysis for Metals enter the upper, normally empty conduction band of silicon and allow the solid to conduct. This type of material is called an n-type semiconductor ... Press LLC Appendix F: Components of Nucleic Acids 33 7 FIGURE F.1 Structure of DNA. © 2002 by CRC Press LLC 32 6 Environmental Sampling and Analysis for M...

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