Environmental Sampling and Analysis for Metals - Chapter 15 pdf

... 100 > 10% (15. 1) © 2002 by CRC Press LLC 236 Environmental Sampling and Analysis for Metals 15. 6.3 PROCEDURE FOR SOLID SAMPLES Solid samples digestion for arsenic and selenium analysis is the ... 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...

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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 reactive...

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... 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 ... 800 73 0-2 215. ) © 2002 by CRC Press LLC 48 Environmental Sampling and Analysis for Metals Aluminum compounds are used for storing and processing food (e.g....

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... amine N-nitrosodi-n-propyl 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-cresol Chlorophenols 2-Chlorophenol 4-Chloro-m-cresol 2,4-Dichlorophenol 2,4,6-Trichlorophenol Pentachlorophenol 2,3,7,8-Tetrachlorodibenzol-p-dioxin ... 2002 by CRC Press LLC 66 Environmental...

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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...

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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. ... standards before dilution with calcium solution; and Cr based on original standards before addition of H 2 O 2 . See methodologies for determining these metals in...

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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, ... LLC 164 Environmental Sampling and Analysis for Metals analyzed sample, such as traces of argon and CO 2 from argon gas, H 2 and O 2 when water is the sol- vent, C...

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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 ... the sampling activities: • Selection of proper sampling equipment (preferred materials for sampling and purging equip- ment for metals analysis include Tefl...

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... con- tain higher concentrations. Selection of method: Use the FAAS (Chapter 8), GrAAS (Chapter 9), or ICP (Chapter 12) method. © 2002 by CRC Press LLC 286 Environmental Sampling and Analysis for ... mineral rocks and clays. Soluble, insoluble, and colloidal aluminum may appear in treated water or wastewater as © 2002 by CRC Press LLC 274 Environmental Sampling and Anal...

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... LLC 318 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 ... containers in a separate cabinet labeled “Solvents” and in a well- ventilated area. © 2002 by CRC Press LLC 312 Environmental Sampling and Analysis for Metals ad...

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