• Nick Panchev

    CONTAMINATED WATER. LAWSUITS, IN HUNDREDS, AGAINST THE GOVS ET AL

    Contaminated Water with Arsenic, Uranium, and many other highly toxic chemicals. Poisoned Ground Drinking Water In All Aquifers Beneath Hinkley, CA 92347

    Link: https://www.prlog.org/12530598-contaminated-water-with-arsenic-uranium-and-many-other-highly-toxic-chemicals.html

    Forwarded by: The Victims, town of Hinkley, California 92347

    Website; http://www.victimstownofhinkley.org

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    • Caliyesca

      Isn’t there a conflict of interest since your real masters created it?

      Issue Date: 2015

      Title: CATHODE RAY TUBE (CRT) LEAD GLASS: LEAD LEACHING STUDY AFTER A CHELATING AGENT TREATMENT

      Authors: Bursi, Elena; Ponzoni, Chiara; Lancellotti, Isabella; Vassura, Ivano; Ferroni, Laura; Barbieri, Luisa

      Internal authors: BURSI, ELENA

      PONZONI, Chiara

      LANCELLOTTI, Isabella

      BARBIERI, Luisa

      Journal: ENVIRONMENTAL ENGINEERING AND MANAGEMENT JOURNAL

      Volume: 14(7)

      First page: 1503

      Last page: 1509

      Abstract: This study is focused on the removal of leachable lead present in CRT (cathode ray tube) glass employing different chelating agents, NTA (nitrilotriacetic acid) and ATMP (amino trimetilen phosphonic acid), and then on the evaluation of their extractive capability. The operating conditions are the following: T=80°C, t=1h, pH=10, solid/liquid weight ratio=1/10, reagent concentration= 0.1 M. Afterwards a number of leaching tests at controlled pH were performed in the 5-9 range for 48h at room temperature to define the lead leaching curves for CRT glass matrix and to evaluate the chelating process efficiency. Experimental leaching curves showed a semi-U-shaped pattern, with maximum lead release at acid pH. Results demonstrated that NTA is able to remove the 66-80% of lead leachable at pH 5.

      Scopus identifier: 2-s2.0-84939211405

      Language: Inglese

      Classificazione ausiliaria: analytical chemistry, chemical theory, physical chemistry/chemical physics

      Keywords: chelating agents, leaching tests, lead extractive method, WEEE lead-glass

  • Caliyesca

    You know about it in such detail is because you engineered it.

    Issue Date: 2015

    Title: CATHODE RAY TUBE (CRT) LEAD GLASS: LEAD LEACHING STUDY AFTER A CHELATING AGENT TREATMENT

    Authors: Bursi, Elena; Ponzoni, Chiara; Lancellotti, Isabella; Vassura, Ivano; Ferroni, Laura; Barbieri, Luisa

    Internal authors: BURSI, ELENA

    PONZONI, Chiara

    LANCELLOTTI, Isabella

    BARBIERI, Luisa

    Journal: ENVIRONMENTAL ENGINEERING AND MANAGEMENT JOURNAL

    Volume: 14(7)

    First page: 1503

    Last page: 1509

    Abstract: This study is focused on the removal of leachable lead present in CRT (cathode ray tube) glass employing different chelating agents, NTA (nitrilotriacetic acid) and ATMP (amino trimetilen phosphonic acid), and then on the evaluation of their extractive capability. The operating conditions are the following: T=80°C, t=1h, pH=10, solid/liquid weight ratio=1/10, reagent concentration= 0.1 M. Afterwards a number of leaching tests at controlled pH were performed in the 5-9 range for 48h at room temperature to define the lead leaching curves for CRT glass matrix and to evaluate the chelating process efficiency. Experimental leaching curves showed a semi-U-shaped pattern, with maximum lead release at acid pH. Results demonstrated that NTA is able to remove the 66-80% of lead leachable at pH 5.

    Scopus identifier: 2-s2.0-84939211405

    URI: http://hdl.handle.net/11380/1071179

    Language: Inglese

    Classificazione ausiliaria: analytical chemistry, chemical theory, physical chemistry/chemical physics

    Keywords: chelating agents, leaching tests, lead extractive method, WEEE lead-glass

    • Caliyesca

      Boronic acid transition-state inhibitors (BATSIs) represent one of the most promising classes of β-lactamase inhibitors. Here we describe a new class of BATSIs, namely, 1-amido-2-triazolylethaneboronic acids, which were synthesized by combining the asymmetric homologation of boronates with copper-catalyzed azide-alkyne cycloaddition for the stereoselective insertion of the amido group and the regioselective formation of the 1,4-disubstituted triazole, respectively. This synthetic pathway, which avoids intermediate purifications, proved to be flexible and efficient, affording in good yields a panel of 14 BATSIs bearing three different R1 amide side chains (acetamido, benzylamido, and 2-thienylacetamido) and several R substituents on the triazole. This small library was tested against two clinically relevant class C β-lactamases from Enterobacter spp. and Pseudomonas aeruginosa. The Ki value of the best compound (13a) was as low as 4 nM with significant reduction of bacterial resistance to the combination of cefotaxime/13a.