Environmental Sampling and Analysis for Metals - Chapter 19 (end) ppsx

... 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 ... component and calculate its concentration according to the analytical method used. FIGURE K.1 Soxhlet extraction. © 2002 by CRC Press LLC 310 Environmental Sampling and...

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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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... 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, and kidney and bone tis- sues accumulate ... Analysis for Metals Metals can form lipid-soluble organo-metallic ions, involving Hg, As, Sn, Tl, and Pb, capable of penetrating biological membranes and accumulating...

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... 2002 by CRC Press LLC 66 Environmental Sampling and Analysis for Metals In 199 3, the MCL and MCLG for atrazine were revised at the request of Ciba-Geigy, the manufac- turer of this chemical ( Fed. ... 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-Dini...

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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. ... 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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... 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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... March 198 3) Methods for Determining Organic Compounds in Drinking Water (EPA 600/4–88–039, December 198 8) Standard Methods for the Examination of Water and Wastewater (APHA-AWWA-WPCF, 19th ed., 199 8) ... 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 Samp...

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