Applications of Environmental Aquatic Chemistry: A Practical Guide - Chapter 5 pptx

... 2.95Eþ04 324 2 15 7 1-4 3-2 Benzene 2 1.75Eþ03 5. 55EÀ03 2.28EÀ01 2.13 1.77 5. 89Eþ01 178 5. 5 5 6 -5 5- 3 Benzo (a) anthracene 1 9.40EÀ03 3.35EÀ06 1.37EÀ04 5. 70 5. 60 3.98Eþ 05 376 84 20 5- 9 9-2 Benzo(b)fluoranthene ... water aver age linear velo city of contamina nt ( 5: 26 ) A retardati on facto r of 10 means that the contamina nt moves at o ne-tenth of the ave...

Ngày tải lên: 12/08/2014, 04:22

... more biologically available than are particulate forms, although ingestion and inhalation of particulates containing metals also can be a serious health hazard. Radioactive metals are hazardous because of ... this chapter that cations in water always attract a hydration shell of water molecules because of electrostatic attractions. Although a cation dissolved in water is often...

Ngày tải lên: 12/08/2014, 04:22

... 3 .5. 1 Background 3 .5. 2 Acidity 3 .5. 3 Alkalinity 3 .5. 4 Importance of Alkalinity 3 .5. 5 Water Quality Criteria and Standards for Alkalinity 3 .5. 6 Calculating Alkalinity 3 .5. 7 Calculating Changes ... substantial impair- ment of the abundance and diversity of species. Class 1—Warm water aquatic life: The se are waters that (1) are currently capable of sustaining a wide v...

Ngày tải lên: 12/08/2014, 04:22

... ular shape also affects polariz- abil ity. Elongat ed mole cules are more polar izabl e than compa ct molecules . Thus, a line ar alkane is more polar izable than a branche d alkane of the same ... carbonate, carboxylate, phosphate, and cyanide anions, as well as water molecules, humic acids, and synthetic chelating agents such as nitrilo- triacetate (NTA) and ethylenediaminetetraacetat...

Ngày tải lên: 12/08/2014, 04:22

... no DNA PL was ever released at that site in the past, or that past releases of DNAPL have failed to reach the water table. Vapor phase, sorbed phase, and dissolved phase contamination may still ... Contaminants of Concern at Many Hazardous Waste Sites Chemical Abstracts Service (CAS) Name Abbreviation CAS Number Other Names Molecular Formula Structural Formula Chloromethane Artic; R40 7...

Ngày tải lên: 12/08/2014, 04:22

... 100 Sm- 151 1,000 Tl-202 300 Ga-72 100 Cd-109 600 Sm- 153 200 Tl-204 300 Ge-71 6,000 Cd-1 15 90 Eu- 152 200 Pb-203 1,000 As-73 1,000 Cd-115m 90 Eu- 154 60 Bi-206 100 As-74 100 In-113m 3,000 Eu- 155 600 ... Bi-207 200 As-76 60 In-114m 60 Gd- 153 600 Pa-230 600 As-77 200 In-1 15 300 Gd- 159 200 Pa-233 300 Se- 75 900 In-115m 1,000 Tb-160 100 Np-239 300 Br-82 100 Sn-113 300 Dy-1 65 1,000 Pu-2...

Ngày tải lên: 12/08/2014, 04:22

... by Taylor & Francis Group, LLC 86 Safe Use of Chemicals: A Practical Guide Inorganic arsenic compounds (As +3 and As +5 ) cause ulceration of nasal sep- tum, nasal septum perforation (as ... Safe Use of Chemicals: A Practical Guide 18. Ganapati, M. 2000. Half of Bangladesh population at risk of arsenic poisoning. British Medical Journal 320: 822. 19. Agency for T...

Ngày tải lên: 18/06/2014, 22:20

... evaluation of the available data on default assessment factors was that the conventionally used factor of 100 (10 for animal-to-human and 10 for human-to- human variations) is probably an underestimate. ... is stated that it is likely that the animal-to-human extrapolation is greatly underestimated, and in the case of human-to-human variability, an assessment factor of 10–16 is consid...

Ngày tải lên: 12/08/2014, 04:22

... Water Soil CO 2 3 .5 Acidity and Alkalinity Background Acidity Alkalinity Importance of Alkalinity Criteria and Standards for Alkalinity Calculating Alkalinity Calculating Changes in Alkalinity, ... federal and state drinking water standards. 5. Wetlands: Surface water and groundwater that supply wetlands. Wetlands may be defined as areas that are inundated or saturated by surface or...

Ngày tải lên: 11/08/2014, 13:21

... (electronegativity of C = 2 .5; electronegativity of H = 2.1) all alkanes are nonpolar because of their bond geometry. In the straight-chain alkanes (called normal-alkanes), as the alkane carbon chain becomes ... also affects polarizability. Elongated molecules are more polarizable than compact molecules. Thus, a linear alkane is more polarizable than a branched alkane of the same...

Ngày tải lên: 11/08/2014, 13:21