Environmental Sampling and Analysis for Metals - Chapter 18 ppt

... laboratory. 18. 1.1 EPA-APPROVED METHODS AND REFERENCES FOR ANALYZING WATER SAMPLES 18. 1.1.1 Methods and References for Analyzing Drinking Water Methods for Chemical Analysis of Water and Wastes ... CRC Press LLC 294 Environmental Sampling and Analysis for Metals Selection of method: FAAS, GrAAS, and ICP methods permit direct determination with accept- able sens...

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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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... 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 Te...

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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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... 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 M...

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... 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 Chapter 18. 8.2.6 SAMPLE ANALYSIS 1. ... 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, w...

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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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... 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 234 Environmental Sampling and Analysis for Metals 15.4 ACID DIGESTION OF AQUEOUS SAMPLES AND EXTRACTS FOR TOTAL METALS BY FLAME ATOMIC ABSORPTION S...

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... Press 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 ... labeled “Solvents” and in a well- ventilated area. © 2002 by CRC Press LLC 312 Environmental Sampling and Analysis for Metals add water to the acid, as t...

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