β Scribed by Henke, Kevin
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This appendix provides a brief survey of some of the readily available English-language government documents, websites, and other key references on the regulation of arsenic in various nations. Regulations related to arsenic in domestic water, solid and liquid wastes, food, commercial products, and emissions to the atmosphere are often very complex (sometimes industry-and site-specific), vary from nation to nation, and frequently change over time. Considering the complexity and the number of regulations and how often modifications occur, a comprehensive and up-to-date summary of the regulations is not possible in this appendix. Readers that desire more current or additional regulations should access the websites listed in this appendix or search the Internet for additional information. Individuals should also recognize that some state, provincial, and municipal governments have more stringent regulations than those enforced by their federal agencies. For example, since 2006, the American state of New Jersey has enforced an arsenic drinking water standard or maximum contaminant level (MCL) of 5 ΞΌg l -1 instead of the federal MCL of 10 ΞΌg l -1 (New Jersey Administrative Code 7 : 10-5.2). Italicized terms in the text of this appendix or words derived from the italicized terms are defined in the glossary of Appendix B.
To protect human health, many nations have established regulatory standards for contaminants in drinking water. In some cases, nations also regulate contaminants in: (1) groundwater, (2) various aqueous wastes, including wastewaters that may be discharged into the environment, (3) irrigation and other agricultural waters, and/or (4) surface waters to protect aquatic life and other organisms.
π SIMILAR VOLUMES
## Abstract The effect of seasonal temperature change on the release of methylated arsenic from macroalgae, phytoplankton and sediment porewaters has been investigated by a series of controlled laboratory experiments. The appearance of dissolved arsenic species in the overlying waters was monitored
Arsenic occurs naturally in the environment and also through agricultural and industrial pollution. Since arsenic species show different toxicities, it is important to be able to separate them. Methods using microorganisms are being applied increasingly to remove metal ions and different metal speci