Water sampling and analysis

... Physical/chemical Minimum frequency of sampling and analysis Open wells for community supply Source and mode of supply Table 4.1 Minimum frequency of sampling and analysis of unpiped water supplies — Situations ... collected and stored This has important consequences for sampling regimes, sampling procedures, and methods of sample preservation and storage In general,...

Ngày tải lên: 04/06/2016, 08:42

... ambient air pollutants sampling, it is also necessary to collect information on qualitative and quantitative data on the local sources of air pollution, topography, population distribution, land ... What it includes: a) Selection of sampling procedures including procedures of analysis of samples b) Sampling locations c) Period of sampling, frequency of sampling and duration...

Ngày tải lên: 29/03/2014, 14:20

... exists in pairs as Hg 22+ Whatever the notation style of mercury(I), it indicates a pair of mercury ions © 20 02 by CRC Press LLC 22 Environmental Sampling and Analysis for Metals in more than 150 ... bluish-gray metal and exists in +2 and +4 oxidation states, although lead(II) compounds are the more common © 20 02 by CRC Press LLC 20 Environmental Sampling and A...

Ngày tải lên: 12/08/2014, 03:20

... 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 ... 40 3. 1.7 Environmental Sampling and Analysis for Metals TWO D’S (DOSE AND DURATION) Toxic effects are determined by the concentration (or dose) of the toxin an...

Ngày tải lên: 12/08/2014, 03:20

... Pesticides Aldrin Dieldrin Chlordane α-Endosulfate Endrin Endrin aldehyde Heptachlor Heptachlor epoxide α-BHC β-BHC γ-BHC δ-BHC 4, 4-DDT 4, 4-DDE (p,p-DDX) 4, 4-DDO (p,p-TDE) Toxaphene Miscellaneous Acrolein ... Chlorobenzene Chloroform o-Cresol m-Cresol p-Cresol 2 , 4- D 1,2-Dichlorobenzene 1 , 4- Dichlorobenzene 1,2-Dichloroethane 1,3-Dichloroethylene 2 , 4- Dinitritoluene Endrin Heptach...

Ngày tải lên: 12/08/2014, 03:20

... Section 7. 6.3 and Chapter 11) for arsenic and selenium, the cold vapor technique (see Section 7. 6.4 and Chapter 10) for mercury, and the chelation-extraction procedure (see Section 7. 6.2) Table 7. 1 ... Press LLC 110 Environmental Sampling and Analysis for Metals digestion or another method is used for sample preparation (see Chapter 15), carry standards...

Ngày tải lên: 12/08/2014, 03:20

... 3 28. 1 309.3 242 .8 553.6 234.9 223.1 422 .8 2 28. 8 240.7 357.9 85 2.1 324 .8 2 48. 3 264.0 766.5 670 .8 285 .2 279,5 313.3 589 .0 232.0 290.9 283 .3 265.9 343.5 349.9 217.6 251.6 224.6 460.7 365.3 3 18. 4 ... of standards before dilution with calcium solution; and Cr based on original standards before addition of H2O2 See methodologies for determining these metals in Chapter 1...

Ngày tải lên: 12/08/2014, 03:20

... matrix-matched standards or by using the standard additions method © 2002 by CRC Press LLC 174 Environmental Sampling and Analysis for Metals 12. 5 REAGENTS AND STANDARDS 12. 5.1 CHEMICALS, STANDARDS, ... FIGURE 12. 5 Photocathode, dynode, and anode layout of photomultiplier tube © 2002 by CRC Press LLC 170 Environmental Sampling and Analysis for Metals 12. 3.5...

Ngày tải lên: 12/08/2014, 03:20

... FIGURE 14. 2 Chain-of-custody form © 2002 by CRC Press LLC Organization: Time: Environmental Sampling and Analysis for Metals Total Number of Containers Sample Collection for ... Collection for Metals Analysis 217 Line for lowering and lifting Rigid Teflon tubing Glass-marble ball -and- seat valve Teflon extruded rod FIGURE 14. 8 Teflon bailer The top of the bailer...

Ngày tải lên: 12/08/2014, 03:20

... 236 Environmental Sampling and Analysis for Metals 15. 6.3 PROCEDURE FOR SOLID SAMPLES Solid samples digestion for arsenic and selenium analysis is the same as described in Section 15. 10 15. 6.4 ... Preparation for Metals Analysis TABLE 15. 3 Sample Preparation Log Sheet (per Analyte Group) 247 © 2002 by CRC Press LLC 248 Environmental Sampling and Analys...

Ngày tải lên: 12/08/2014, 03:20

... 282.1&2 — 283.1&2 — 286.1&2 — 289.1&2 Ref R-1 R-1 R-1 R-1 R-1 R-2 R-2 R-1 R-1 R-1 R-1 R-2 R-1 R-1 R-1 R-1 R-1 R-1 R-1 R-1 R-1 R-1 R-1 R-1 R-1 R-1 R-1 R-1 R-1 R-1 Method No 7020 7040 7060 7080 7090 ... 7760 7770 7840 7870 — 7910 7950 Ref R-3 R-3 R-3 R-3 R-3 — — R-3 R-3 — R-3 R-3 R-3 R-3 R-3 R-3 R-3 R-3 R-3 R-3 R-3 R-3 R-3 R-3 R-3 R-3 R-3 — R-3 R-3 Note: Metals analysis by inductively coupl...

Ngày tải lên: 12/08/2014, 03:20

... Matter and Its Changes, John Wiley & Sons, New York, 199 3 A Concise Dictionary of Chemistry, 2nd ed., Oxford University Press, Oxford, 199 0 Csuros, M., Environmental Sampling and Analysis for Technicians, ... Press LLC 310 Environmental Sampling and Analysis for Metals 19. 2.2 HAZARDOUS PROPERTIES OF COMPRESSED GASES The properties of a compressed gas must be well...

Ngày tải lên: 12/08/2014, 03:20

... desorbability of soil P (Breeuwsma and Reijerink 19 92; Beauchemin and Simard 20 00) In the mid-Atlantic USA region, Sims et al (20 02) reported that the M3-P=(M3-Al þ M3-Fe) can be used to predict runoff and ... solutions of 0.5, 1.0, 1.5, 2. 0 and 0.3, 0.6, 0.9, 1 :2 mg mLÀ1 of K and Na, respectively d Combined Ca and Mg standard solutions Prepare 2, 4, 6, 8, 10 and...

Ngày tải lên: 12/08/2014, 02:23