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The Science of Air Pollution
Published in Daniel T. Rogers, Environmental Compliance Handbook, 2023
Benzoylmethylecgonine or cocaine is a stimulant affecting the central nervous system and also acts as an appetite suppressant. Antibiotics inhibit the growth of bacteria. Sildenafil citrate is an arterial stimulant that was originally intended to treat high blood pressure (Barnes et al. 2008). Testosterone is a male sex hormone—an anabolic steroid—and affects the growth of muscle mass. Other emerging contaminants of note include a group of compounds called perchlorates and the compound 1,4-Dioxane. Perchlorates are colorless and odorless salts. They are a group of compounds including: Magnesium perchlorate (MgClO4)Potassium perchlorate (KClO4)Ammonium perchlorate (NH4ClO4)Sodium perchlorate (NaClO4)Lithium perchlorate (LiClO4)
Land Contamination
Published in Daniel T. Rogers, Environmental Compliance Handbook, 2023
Two other emerging contaminants of note include a group of compounds called perchlorates and the compound 1,4-dioxane. Perchlorates are colorless and odorless salts. They are a group of compounds including: Magnesium perchlorate (MgClO4)Potassium perchlorate (KClO4)Ammonium perchlorate (NH4ClO4)Sodium perchlorate (NaClO4)Lithium perchlorate (LiClO4)
Pollution
Published in Daniel T. Rogers, Environmental Compliance and Sustainability, 2019
Two other emerging contaminants of note include a group of compounds called perchlorates and the compound 1,4-Dioxane. Perchlorates are colorless and odorless salts. They are a group of compounds including: Magnesium perchlorate (MgClO4) Potassium perchlorate (KClO4) Ammonium perchlorate (NH4ClO4) Sodium perchlorate (NaClO4) Lithium perchlorate (LiClO4)
N-tert-butoxycarbonyl (BOC) protected [V6O13{(OCH2)3CNH2}2]2−: synthesis, structural characterization, and solution behavior
Published in Journal of Coordination Chemistry, 2020
Ibrahima Fa Bamba, Clément Falaise, Gildas K. Gbassi, Patrick Atheba, Mohamed Haouas, Emmanuel Cadot
Five hundred milligrams of TBA2[V6O13{(OCH2)3C–NH(BOC)}2]·2DMA (0.31 mmol) were dissolved in 10 ml of acetonitrile. Then this reddish solution was dropped into 5 mL of acetonitrile containing 2 g of sodium perchlorate hydrate (16 mmol) under stirring. Immediately after the addition of the first drops, a dark orange precipitate formed. The resulting mixture is stirred for 2 h. 350 mg of Na2[V6O13{(OCH2)3C–NH(BOC)}2]·6H2O (0.27 mmol) is recovered by centrifugation (5000 rpm) and washed with acetonitrile and diethyl ether. Yield: 87% based on vanadium. Anal. Calcd. (found) for C18H44N2Na2O29V6: C, 19.7(18.6); H, 4.0(4.25); N, 2.5(2.6); Na, 4.16(3.97); V, 27.7(25.7).
Synthesis, characterization and antioxidant activity of EGCG complexes with copper and zinc ions
Published in Journal of Coordination Chemistry, 2019
Maysoon Alhafez, Fadi Kheder, Malak Aljoubbeh
The ionic strength was adjusted by sodium perchlorate (I = 0.1 M). A stock solution of EGCG ([L] = 4.36 × 10−5 M) was prepared by ionic strength solution. A stock solution of metal (M) was prepared in doubly-distilled water and titrated against EDTA with muroxide or Eriochrome black-T as indicators to verify the final concentration: Copper perchlorate solution (Cu(ClO4)2; 1.36 × 10−2 M) and zinc perchlorate solution (Zn(ClO4)2; 9.43 × 10−3 M). The solutions were diluted afterwards as needed. On the other hand, once the suitable pH was determined the ionic strength solution’s pH was adjusted by phosphate buffer solution (K2HPO4; 15.0836 g and KH2PO4; 1.8236 g per 1 L) and used henceforth.
Extraction of lanthanides(III) from Perchlorate Solutions with Carbamoyl- and Phosphorylmethoxymethylphosphine Oxides and Tetrabutyldiglycolamide
Published in Solvent Extraction and Ion Exchange, 2019
A. N. Turanov, V. K. Karandashev, A. V. Kharlamov, N. A. Bondarenko, V. A. Khvostikov
Chemical-grade 1,2-dichloroethane (DCE), purchased from the Vecton company (St. Petersburg, Russia), was used as a diluent. Chemical-grade perchloric acid and sodium perchlorate monohydrate were purchased from Reachim, Russia. Deionized water from a NANOPURE purification system (Thermo Scientific, USA) of 18 MΩ cm−1 resistivity was used for the preparation of all aqueous solutions. Stock aqueous solutions of lanthanides(III) and Y(III) were prepared from the chemical grade perchlorate salts (Reachim, Russia) in deionized water and standardized by complexometric titration with EDTA using xylenol orange as an indicator. The initial concentration of metal ions was 2 × 10–6 M for each element. All lanthanides(III) (except Pm) were present in the initial aqueous phase when simultaneous extraction of Ln(III) was studied. The organic phase was prepared by dissolving precisely weighed quantities of the extractants in DCE.