Threshold Limit Values for some inorganic chemical specified in standard methods, these are contained heavy metals in sea water. Chromium metal and insoluble salts--TLV (mg/m3) 1/0.5, Lead--/0.15, Mercury--0.1/0.05,KOH--- _/2( Ceilling), Silver (metal and soluble compounds,as Ag )--- 0.01/0.1 metal, 0.01 soluble as Ag, Sodium azide--- -/0.29 ( Celling ), NaOH-- 2( C )/2(C) etc.
The Canadian Environmental Quality Guidelines give you Water Quality Guidelines
for the Protection of Aquatic Life (freshwater values and marine water values). Canadian water quality guidelines are intended to provide protection of freshwater and marine life from anthropogenic stressors such as chemical inputs (including heavy metals) or changes to physical components.These guidelines are limits or narrative statements based on the most current, scientifically defensible toxicological data available for the parameter of interest. You can find limits for the most important heavy metals including Arsenic. These limits are used as reference values for research worldwide, however you should take into account that each region has its own characteristics so it should have its own guidelines.
Canadian Environmental Quality Guidelines:
http://ceqg-rcqe.ccme.ca/en/index.html#void
http://st-ts.ccme.ca/en/index.html
I have usually used for heavy metals the NOAA. Screening Quick reference Tables and also Canadian Environmental Quality Guidelines
Dear sir, in one of my articles entitled "The “Sea Diamond” shipwreck: environmental impact assessment in the water column and sediments of the wreck area" you may find the requested heavy metal limits in seawater as set by the US EPA. I will personally send you the article since you cannot download it from my profile.
Kind regards!
European EQS values can be gained here
http://eur-lex.europa.eu/legal-content/EN/TXT/PDF/?uri=CELEX:52011PC0876&from=EN
Nature concentration of marine water (EPA2002) shows that
As 3µg/l, Cu 3µg/l, Cr 0.05µg/l, Cd 0.11µg/l, Ni 5.4µg/l, Pb 0.3µg/l, Hg 0.03µg/l, Zn 10µg/l
As others have noted, there are a wide variety of different benchmarks for metals thus there are no definitive 'bright lines'. More importantly, there is no such thing as 'heavy metals', see below. Use the term metals where appropriate, metalloids where appropriate (e.g., arsenic), and non-metals where appropriate (e.g., selenium).
Chapman, P.M. 'Heavy metal' - cacophony not symphony. Integr. Environ. Assess. Manage. 2012, 8, 216.
Chapman, P. M. Heavy Metal – Music Not Science. Environ. Sci. Technol. 2007, 41, 6C
Conrad, B. R. Terminology for Metals. Soc. Environ. Toxicol. Chem. News 1999, 19 (5), 15–16.
Duffus, J. H. (on behalf of IUPAC, Chemistry and Human Health Division, Clinical Chemistry Section, Commission on Toxicology). “Heavy Metals”—A Meaningless Term? Pure Appl. Chem. 2002, 74, 793–807.
Hodson, M. E. Heavy Metals—Geochemical Bogey Men? Environ. Pollut. 2004, 129, 341–343.
Nieboer, E.; Richardson, D. H. S. The Replacement of the Non-Descript Term “Heavy Metals” by a Biologically and Chemically Significant Classification of Metal Ions. Environ. Pollut. B 1980, 1, 3–26.
This article can be of help
Heavy metals in seawater, marine sediments and corals from the Townsville section, Great Barrier Reef Marine Park, Queensland
http://www.sciencedirect.com/science/article/pii/S0304420300000505
you can find the normal concentration of metals in sea water ( reference concentration) . in EPA site
Dear Sir,
The following attachment can help.
https://www.epa.gov/wqc/national-recommended-water-quality-criteria-aquatic-life-criteria-table
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