The biogas includes: macrocomponents--methane (C[H.sub.4]) and carbon dioxide (C[O.sub.2]); microcomponents --sulfur dioxide (S[O.sub.2]), nitrogen oxide (NO), hydrogen fluoride (HF), ammonia (N[H.sub.3]), hydrogen sulfide ([H.sub.2]S), nitrogen ([N.sub.2]), hydrogen ([H.sub.2]), oxygen ([O.sub.2]), benzene ([C.sub.6][H.sub.6]), trichloromethane
(CH[Cl.sub.3]), carbon tetrachloride (C[Cl.sub.4]), chlorobenzene ([C.sub.6][H.sub.5]Cl), and other chemical compounds (23,24,25).
Which colourless liquid, once used as an anaesthetic, is also called trichloromethane
? A Chloroform B Alcohol C Methanol D Ethanol 15.
Xylene, ethanol, concentrated sulfuric acid ([H.sub.2]S[O.sub.4]), trichloromethane
(CH[Cl.sub.3]), hydrochloric acid (HC1), azodiisobutyronitrile (AIBN, re-crystallized by ethanol before used), and sodium dodecylbenzene sulfonate(SDBS) were purchased from Sinopharm Chemical Reagent Co, Ltd.
The 200 [micro]L trichloromethane
was added to the supernatant, and the mixture was agitated for 20 s.
Vadoud Niri's 2016 research on plant VOC uptake at the State University of New York at Oswego (bit.ly/2zqDawF) examined the effectiveness of several species of air-purifying plants at removing eight compounds: benzene, toluene, ethylbenzene, p-xylene, o-xylene, acetone, dichloromethane (methylene chloride) and trichloromethane
N-Benzoyl-N-phenylhydroxylamine (BPHA), sodium thiosulphate, hydrochloric acid, ammonia solutions oxine, dpy, dichloromethane (C[H.sub.2][Cl.sub.2]), and trichloromethane
(CH[Cl.sub.3]) were bought from Aladdin (Aladdin Industrial Co., Shanghai, China).
average concentrations of trihalomethanes in primary and secondary water samples from the WTPs generally followed the sequence TCM > BDCM > TBM = DBCM, which was consistent with similar documented reports." It is unclear to me what is meant by the equals sign in this ordering, but assuming this is a typographic error, they only report above detection limit data on three of the four species (TCM (trichloromethane
), BDCM (bromodichloromethane), and DBCM (dibromochloromethane)) at one site (LW).
MW, molecular weight; T, optimal or favourable temperature of enzyme activity; OA, oleic acid; Tw-20, Tween-20; Tw-80, Tween-80; SURF, surfactants; BME, 2-mercaptoethanol; solvent (A): methanol, ethanol, acetone benzene chloroform xylene; solvent (B): benzene, xylene, n-hexane, methanol, ethanol, and toluene up to 30%; solvent (C): kerosene, n-dodecane, and hexane; solvent (D): acetone, MeOH, trichloromethane
, petroleum ether, hexane, isopropanol, DTT, EDTA, polyhexamethylene biguanide, DMSO, benzene, Tri-X-100, Tw-20, Tw-80, SDS; M+ (A): [Cu.sup.2]+, [Fe.sup.2+], [Zn.sub.2+], and [Co.sup.2+]; M+ (B): [Co.sup.2+], [Cd.sup.2+], [Hg.sup.2+], [Cu.sup.2+], and [Pb.sup.2+]; I-, iodine.
In brief, 100 mg of PLGA was dissolved in 2 mL of trichloromethane
and added with 200 [micro]l of PFP (Sigma-Aldrich Chemical Co., USA); the primary emulsion was obtained by an ultrasonic probe (VCX-130, Sonics & Materials Inc., USA).
Based on the reaction between the dithizone and [Hg.sup.2+] in the trichloromethane
under strongly acidic conditions, the paper-based test strip for determining the concentration of [Hg.sup.2+] in aqueous solutions could be developed.
The reactor and stir bar were washed with trichloromethane
, and then, they were poured into the beaker too (Figure 2).
Chloroform or trichloromethane
is the second largest source of natural chlorine.