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Friday, July 31, 2020 | History

2 edition of Investigations concerning probable impact of nitrilotriacetic acid on ground waters found in the catalog.

Investigations concerning probable impact of nitrilotriacetic acid on ground waters

Robert S. Kerr Water Research Center.

Investigations concerning probable impact of nitrilotriacetic acid on ground waters

by Robert S. Kerr Water Research Center.

  • 362 Want to read
  • 30 Currently reading

Published by U.S. Environmental Protection Agency]; for sale by the Supt. of Docs., U.S. Govt. Print. Off. in Washington .
Written in English

    Subjects:
  • Groundwater -- Pollution.,
  • Nitrilotriacetic acid.

  • Edition Notes

    Statementby William J. Dunlap [and others.
    SeriesWater pollution control research series
    ContributionsDunlap, William J.
    Classifications
    LC ClassificationsTD427.D4 R6
    The Physical Object
    Paginationix, 51 p.
    Number of Pages51
    ID Numbers
    Open LibraryOL5389669M
    LC Control Number72600900

    Risk assessment and hazard evaluation activities relating to chemical contaminants in drinking water. CalEnviroScreen. Explore CalEnviroScreen, a mapping tool showing communities affected by pollution Nitrilotriacetic Acid; Nitrilotriacetic Acid. More information about Nitrilotriacetic Acid. Chemical Status; Cancer: Currently listed. Risk assessment and hazard evaluation activities relating to chemical contaminants in drinking water. CalEnviroScreen. Explore CalEnviroScreen, a mapping tool showing communities affected by pollution. CalEcotox Database. Nitrilotriacetic Acid. CAS Number Synonym(s).

    Pair your accounts. Export articles to Mendeley. Get article recommendations from ACS based on references in your Mendeley library. NITRILOTRIACETIC ACID TRISODIUM SALT MONOHYDRATE is incompatible with oxidizers, aluminum, copper and strong acids. Since this chemical is a known or suspected carcinogen you should contact a physician for advice regarding the possible long term health effects and potential recommendation for medical monitoring. Recommendations from the.

    Comparison of Nitrilotriacetic Acid and [S,S] Comment on “Impact to Underground Sources of Drinking Water and Domestic Wells from Production Well Stimulation and Completion Practices in the Pavillion, Wyoming, Field” Environmental Science & Technology Nitrilotriacetic acid trisodium salt Sigma Grade, ≥98% Synonym: N,N-Bis(carboxymethyl) glycine, NTA, Triglycollamic acid CAS Number Linear Formula C 6 H 6 NO 6 Na 3. Molecular Weight EC Number MDL number MFCD PubChem Substance ID .


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Investigations concerning probable impact of nitrilotriacetic acid on ground waters by Robert S. Kerr Water Research Center. Download PDF EPUB FB2

Additional Physical Format: Online version: Robert S. Kerr Water Research Center. Investigations concerning probable impact of nitrilotriacetic acid on ground waters. water pollution control research series • ghr 11/71 investigations concerning proe able impact of nitrilotriacetic acid on ground water environmental protection agency WATER POLLUTION CONTROL RESEARCH SERIES The Water Pollution Control Research Series describes the results and progress in the control and abatement of pollution in our Nation's waters.

The trisodium salt of nitrilotriacetic acid (NTA) is used in laundry detergents as a "builder" to replace phosphates because of its ability to chelate calcium and magnesium ions (1).

NTA is used extensively in the treatment of boiler water to prevent the accumulation of mineral scale. Determination of Nitrilotriacetic Acid in Waters and Waste Waters by Gas-Liquid Chromatography, Differential Pulse Polarography and a Colorimetric Method.

International Journal of Environmental Analytical Chemistry: Vol. 12, No.pp. Cited by: The behaviour of nitrilotriacetic acid during the anaerobic digestion of co-settled sewage sludge Author links open overlay panel T.

Stephenson R. Perry J.N. Lester Show moreCited by: Seip () found a difference between uptake of zinc by algae in polluted and unpolluted water. In the latter the uptake was higher, which might be explained by a more pronounced complex formation in polluted water.

Seip has developed a model for the uptake of zinc. In laboratory simulations of the anaerobic sludge digestion process, the impact of the detergent builder nitrilotriacetic acid (NTA) on digester efficiency has been studied. It was concluded that NTA at concentrations up to 30 mg l −1 had no adverse effect on anaerobic digestion.

However, analysis of the digested sludge indicated that only 29–45% of the influent NTA was removed during by:   Two chromatographic techniques can be considered for the detection of the complexing agents NTA, EDTA and DTPA in water: gas chromatography (GC) and liquid chromatography (HPLC).

GC is capable of detecting all three compounds in concentrations of as little as mg/l. However, this requires a complex and time-consuming sample preparation (enrichment, derivatization).Cited by: NTA is present in drinking water primarily in the form of metal complexes, rather than as the free acid.

The amount of NTA complexed with metal ions is dependent on the concentrations of the metal ion, NTA 3-and H +, as well as the formation constants of the various complexes.

Footnote 4 Based on one model of NTA metal ion speciation, it is predicted that at a concentration of 25 ppb in river. For an ecological assessment of the introduction and fate of organic chelating agents in the aquatic environment, the previously (part I of the article [1]) reported studies on the adsorption of 1-hydroxyethane-1,1-diphosphonic acid (HEDP) and nitrilotriacetic acid (NTA) onto clay minerals were completed with the investigation of the adsorption onto sewage sludges and by: J.

War. Pollut. Control Fed. 46, minus its rate of removal from the environment. Dunlap W. J., Crosby R. L., McNabb J. F., Bledsoe B. & These steady state concentrations are predictable ScalfM.

() Investigation concerning probable im- based on rates of NTA degradation and biomass pact of nitrilotriacetic acid on ground by: The results show that NTA at concentrations determined in natural water systems causes no disturbances of the equilibrium in ecosystems.

The conditions of the NTA biodegradation process in communal sewage and in surface waters and the effects of the processes taking place in water treatment systems destined for providing drinking water on NTA.

Occupational exposure to nitrilotriacetic acid may occur through inhalation and dermal contact with this compound at workplaces where nitrilotriacetic acid is produced or used.

Monitoring data indicate that the general population may be exposed to nitrilotriacetic acid ingestion of drinking water, and dermal contact with this compound or other products containing nitrilotriacetic acid. Chemical hazards in drinking-water: Nitrilotriacetic acid.

Nitrilotriacetic acid is considered in the WHO Guidelines for Drinking-water Quality (GDWQ). Background document for the development of the GDWQ pdf, kb; Chemical fact sheet in the GDWQ pdf, 77kb; History of guideline development pdf, 9kb; For individual chemicals, the GDWQ also.

Nitrilotriacetic Acid CAS No. Exposure to the trisodium salt had the same effects in rats and In Canada, typical concentrations in ground and drinking water were 1 to 5 μg/L, and concentrations in Canadian environmental water samples ranged from to mg/L (Rak-File Size: KB.

[Nitrilotriacetic acid (NTA)--properties, distribution and behavior in the environment. Chemical and toxicological properties of NTA]. [Article in Polish] Jedra M(1), Malanowska M.

Author information: (1)Zakładu Badania Zywności i Przedmiotów Uzytku, Państwowego Zakładu Higieny w : Jedra M, Malanowska M.

Nitrilotriacetic acid Sigma Grade, ≥99% Synonym: N,N-Bis(carboxymethyl) glycine, NTA, Tris(carboxymethyl) amine CAS Number Linear Formula N(CH 2 COOH) 3.

Molecular Weight Beilstein/REAXYS Number EC Number MDL number MFCD PubChem Substance ID NACRES NA SECTION 3 LITERATURE REVIEW CHEMICAL PROPERTIES Nitrilotriacetic acid (NTA, Fig.

1) is a synthetic amino acid having a tertiary nitrogen atom. Its commercial synthesis affords the trisodium salt monohydrate in a purity of 98%; the product also contains small amounts of the related compound imino- diacetic acid (IDA, Fig.

NITRILOTRIACETIC ACID is incompatible with strong oxidizers, aluminum, copper, copper alloy and nickel. Since this chemical is a known or suspected carcinogen you should contact a physician for advice regarding the possible long term health effects and potential recommendation for medical monitoring.

Recommendations from the physician will. [Nitrilotriacetic acid (NTA)--properties and environmental behavior. The conditions of the NTA biodegradation process in communal sewage and in surface waters and the effects of the processes taking place in water treatment systems destined for providing drinking water on NTA degradation are described.

In a summary of the results of Author: Malanowska M, Jedra M. 1. Rep Carcinog. ; Nitrilotriacetic acid. National Toxicology Program. PMID: [Indexed for MEDLINE] MeSH terms.

Animals; Carcinogenicity Tests.Nitriloacetic acid can cause eye, skin, and respiratory tract irritation; and can cause kidney and bladder damage. The compound is anticipated to have the potential to cause human cancers. In contrast to EDTA, NTA is easily biodegradable and is almost completely removed during wastewater ein Reference: Title: Methylnicotinic Acid Author: Waters Subject: Excerpt From XTerra® Columns Applications Notebook which contains over individual HPLC and LC/MS Applications, Sample Preparation Protocols, XTerra® Column Care and Use Instructions, Recommended Buffer Systems for XTerra® Columns and Product Ordering \ Information.