193 resultados para Cd2
Resumo:
A settlement inhibition assay using barnacle cyprid larvae, Balanus amphitrite, was developed with Cd2+ and phenol as standard reference toxicants. Mean percentage settlement of cyprid larvae showed a progressive reduction with increasing concentrations of Cd2+ and phenol. A significant reduction in settlement was found when cyprids were exposed to 0.1 mgL(-1) Cd2+ or 10 mgL(-1) phenol. The assay was used to assess the sublethal toxicity of three oil dispersants (Vecom B-1425 GL, Norchem OSD-570 and Corexit 9905) commonly used in Hong Kong waters. Results of this investigation show that the barnacle settlement inhibition assay can be incorporated into the battery of tests currently available for ecotoxicological assessment of marine contaminants. (C) 1997 Elsevier Science Ltd.
Resumo:
3(cdb3) BL21(DE3)pET28b-cdb337OD6000.61mM IPTG 30cdb3cdb3cdb3, cdb3- cdb3TrpGuHClcdb3 TrppH6.010.0cdb3Tm15pH 7.2pH9.2Cd2+Ca2+Cu2+Co2+Mg2 Zn2+cdb3Trp50Mcdb3cdb3N123TFETFE80% ATPcdb3ATP3mMcdb3
Resumo:
1985T(Tupaia belangeri)(TRBC)(SRBC)(E)TRBCTRBCT45TRBCSRBC(CD2)T(CD)TCD(McAb)(Antigenic modulation or co-modulation)TRBCTRBCE~+-PBL88.8%E~--PBL4.16%TRBCT(CEM, H33JHJA1, Jurkat, MLA-144, Molt-3, Molt-4, Molt-4 clone-8 PEER)BB(Daudi, RajiReh)TCD3, TCR, CD5, CD6CD7McAb OKT3, T108(F1), T136(F101-15), T149(M-T604)T152(7G5)TRBCTRBCT11.1 McAb OKT11OKT11E49.3%77.7%1013CD2 McAbT089 (39C1.5)12McAbT081 (x/3)T082 (GLB-T11.2/1)T083 (GLB-T11.1/1)T085 (RPA-2.10)T1088 (0-275)T092 (M-T201)TRBCET084 (F110.08)T091 (AICD2.1)CD2 McAb-T086 (D-66 clonel)T087 (GT-2)TRBCTRBCEEET090 (6F10.3)T198 (JOR-T2)TRBCETRBCTTCD2 (gp50), CD3/TCRCD5, CD6CD7CD2TRBCEETRBCETRBCTRBCT
Resumo:
T(tree shrew red blood cell, TRBC)TE 1985TTRBCCD2E2(Ben and Zheng, 1991)TRBCCD2CD11aD29CD44CD56E2CAM'STRBCETRBCNP40KCLCD2TRBC
Resumo:
CdS clusters in zeolite-Y have been prepared by the exchange of Cd2+ into the zeolite following by sulfurization with Na2S in solution. Blue-shifts from the bulk caused by quantum size effect and the change of absorption upon CdS loading are observed. Two absorption bands are detected for one of the sample and are assigned to the 1s-1s band and exciton transition, respectively. The exciton feature is more pronounced in the excitation spectrum than in the absorption spectrum, and the luminescence excited at the exciton band is stronger than that at the 1s-1s band. Copyright (C) 1996 Elsevier Science Ltd
Resumo:
- SEOXWSAOMRESSEOXOMWSARESEhpHSE CdPbC1- SO42- F- C1- > SO42- > F-SO42- > C1- > F- Cd2+ Pb2+Elovich
Resumo:
TCASTCASTCASTCASPb2+Cd2+Cu2+Zn2+26.32mg•g-118.12mg•g-112.24mg•g-16.85mg•g-19.23 mg•g-17.92 mg•g-16.73 mg•g-14.34 mg•g-1pHTCASTCASTCASTCASTCASTCASTCASCuZnCdPblg9.798.726.875.00TCASTCAS
Resumo:
1Cd2+Pb2+-.,Cd2+Pb2+,2Cd2+Freundlich,Pb2+LangmuirFreundlich.Cd2+Pb2+,Elovich,.Cd2+Pb2+,,Cd2+Pb2+,Cd2+Pb2+2.2Cd2+Pb2+,.Cd2+Pb2+,Elovich,.
Resumo:
(CMC):(AA)/=10,()(N,N-)0.00140.0015.,CMC400~45016h,Zn2+Cu2+Pb2+Cd2+Cr2+Ni2+Mn2+.,CMC,pH,pH9;CMCPb2+Cu2+.
Resumo:
,,pH 2.0,4,30 g/L,1 h,4,Cd 98.9%Pb 99.6%Zn 98.9%Cu 98.7%;,4Cd 3.2Pb 90.8Zn 27.3Cu 52.4 mg/g;,60 minElovich,4,4Pb2+>Cd2+>Cu2+>Zn2+
Resumo:
2(A;B)Cd2+Pb2+-.,ACd2+Pb2+B.E lovich2Cd2+Pb2+,,.2Cd2+Pb2+,.2Cd2+Pb2+E lovich,,.
Resumo:
,3Cd2+Pb2+-.,Cd2+Pb2+.3Cd2+Freundlich,Pb2+LangmuirFreundlich.3Cd2+Pb2+,Elovich,.Pb2+Cd2+.Cd2+Pb2+,Cd2+Pb2+.3Cd2+Pb2+,.
Resumo:
-,G,,G,X(XRD)(SEM)(FTIR),Cd2+,GpH4~7,Cd2+,FreundlichHO,(),(G)(S),Cd2+1 mol.L-1Cd2+,,Cd2+,
Resumo:
A method has been established to study the competing binding of metal ions with protein by a combined technique of microdialysis with high performance liquid chromatography (HPLC). Ni2+, Cd2+, Zn2+, Cu2+ and human serum albumin (HSA) were chosen as model metal ions and protein. The experimental results show that Ni2+ and Cu2+ share a common primary binding site on HSA, and Zn2+ and Cd2+ share a different common primary binding site from them, but there is a common multi-metal binding site for all of those four metal ions. This method show advantages of fast sampling, easily to be operated and especially to be useful when ideal spectroscopic probes are not available for the study of interaction between protein and metal ions.
Resumo:
This article reports on the performance of a bismuth-coated carbon microdisk electrode (BiFE) for the determination of trace heavy metals by anodic stripping voltammetry (ASV). The BiFE was prepared by electrodeposition of a metallic bismuth film onto the microdisk, by applying an in-situ electroplating procedure. To test the performance of the BiFE, ASV measurements were performed on synthetic solutions containing Cd2+, Pb2+, and Cu2+ as target ions. The results indicated that cadmium and lead gave well-defined ASV peaks with no interference, and their quantitative determination could be carried out straightforwardly. In particular, linear calibration curves over the range 5.0 x 10-8-1.0 x 10-6M for both ions, and detection limits of 7.8 and 2.9 nM, for cadmium and lead, respectively, after applying a 60 sec preconcentration step, were obtained. The reproducibility was also satisfactory, the relative standard deviation (RSD) being within 2.5% for both ions. Copper, instead, gave an ASV response that. in most experimental conditions, overlapped with that of bismuth. This circumstance made the determination of copper at the BiFE difficult. Since the latter element could be detected reliably at the uncoated carbon microdisk electrode (CE), both BiFE and CE were employed, respectively, for the determination of lead and copper ions in drinking water, wine, and tomato sauce.
