armarego - purification of laboratory chemicals 5e
PURIFICATION OF LABORATORY CHEMICALS pot
... PURIFICATION OF LABORATORY CHEMICALS Wilfred L. F .Armarego Christina U Un Chai COMMON PHYSICAL TECHNIQUES USED IN PURIFICATION 1 INTRODUCTION 1 THE QUESTION OF PURITY 1 SOURCES OF IMPURITIES ... 3 Silylation of glassware and plasticware .4 SAFETY PRECAUTIONS ASSOCIATED WITH THE PURIFICATION OF LABORATORY CHEMICALS 4 SOME HAZARDS OF CHEMICAL MANIPULATION IN PURIFIC...
Ngày tải lên: 14/03/2014, 20:20
PURIFICATION OF ORGANIC CHEMICALS pot
... Purification of Organic Chemicals 75 1 -0 -Ace tyl-2,3,5 - t ri-0 - benzo y 1 - p -D - ri bo fu ranose [ 69 74 - 32 - 91 M 504.5, m 12 8-1 30°, 13 0- 131°, 13 1-1 32O, [a]:' ... EtOWethyl ether. N-Acetyl-L-alanyl-L-alanyl-L-alaninamide [2942 8-3 4-0 1 M 272.3, m 29 5-3 00°. MeOWether. Crystd from N-Acetyl-L-alanylg...
Ngày tải lên: 05/03/2014, 21:20
ANAEROBIC BIODEGRADATION RATES OF ORGANIC CHEMICALS IN GROUNDWATER: A SUMMARY OF FIELD AND LABORATORY STUDIES pdf
... Identified 00007 5-6 9-4 / Trichloroflouromethane (CFC-11) 0.0016 0.0016 0.0016 0.0016 N.A. Not Identified 00007 5-7 1-8 / Dichlorodifluoromethane (CFC-12) 0 0 0 0 N.A. Not Identified 00007 6-1 3-1 / 1,1,2-Trichloro- 1,2,2-trifluoroethane ... 0.0651 Not Identified 00009 5-4 8-7 / o-Cresol 0.005 0 0.034 0.005 0.0172 Not Identified 00010 8-3 9-4 / m-Cresol 0.029 0.0029 0.033...
Ngày tải lên: 28/03/2014, 19:20
AEROBIC BIODEGRADATION OF ORGANIC CHEMICALS IN ENVIRONMENTAL MEDIA: A SUMMARY OF FIELD AND LABORATORY STUDIES pot
... adequately described by first-order kinetics. 2.2.2. First-Order Rate Constants First-order rate constants are used as a convenient approximation of the kinetics of degradation of test substrates where ... concentration of oxygen often becomes the rate-limiting factor in the biodegradation of the BTEX compounds in aquifer environments. During laboratory studies this can be contro...
Ngày tải lên: 28/03/2014, 19:20
Genotoxicity of 255 chemicals in the Salmonella microsome test (Ames test) and 8-hydroxyguanine (8-OH-Gua) assay for the detection of carcinogens
... 2,410 (38.3) (N -propyl-N '-nitro-N -nitrosoguanidine) BNNG 32 (1.0) NT NT 2,106 (65.8) (N -butyl-N '-nitro-N -nitrosoguanidine) - 29 - 10 5 dG per nanomolecule (nmol) of chemicals) induced ... methosulfate ND ND ND NT Alk ylating chemicals MNNG 148 (1.0) NT NT 912 ( 6.1) (N -methyl-N '-nitro-N -nitrosoguanidine) ENNG ND NT NT 10,521 (N -ethyl-N '-nitro-N...
Ngày tải lên: 05/09/2013, 08:40
Mutagen Formation Potential of Composite Samples Prepared by Biodegradation of Agricultural Chemicals
... insecticide 26.6 265 (20℃) - IBP fungicide -4 92.0 430 (20℃) - Napropamide herbicide - 73 (25℃) - Propyzamide herbicide - 15 (25℃) - Isophenphos insecticide - 18 (20℃) - N ; Mutagenicity of the sample before ... 212.4 - - Buprofezin insecticide 171.2 0.9 (25℃) - Bensultap insecticide 79.6 - - Pyridiphenthion insecticide 74.1 100 (20℃) -...
Ngày tải lên: 05/09/2013, 09:38
Tài liệu Literature Review of Organic Chemicals of Emerging Environmental Concern in Use in Auckland ppt
... ISBN 97 8-1 -8 7748 3-6 9-1 Literature Review of Organic Chemicals of Emerging Environmental Concern in Use in Auckland 12 Table Table Table Table 2 22 2 Environmental hazard profile of classic ... persistence of a substance using the following three-rank classification: • low- (non-) persistent = degradation half-life less than one week, • moderately persiste...
Ngày tải lên: 14/02/2014, 03:20
Tài liệu Investigation of Organic Chemicals Potentially Responsible for Mortality and Intersex in Fish of the North Fork of the Shenandoah River, Virginia, during Spring of 2007 ppt
... compounds (PRCs—acenaphthyl- ene-d 10 , acenaphthene-d 10 , fluorene-d 10 , phenanthrene-d 10 and pyrene-d 10 ). A description of the PRC approach is given in the Estimation of Ambient Water Concentrations ... measure of estrogenicity. The EEQ is an estimate of the amount of 17β-estradiol, a natural hormone, that would be required to give a response equivalent to that of the...
Ngày tải lên: 14/02/2014, 08:20
Tài liệu Nonequilibrium transport and sorption of organic chemicals during aquifer remediation doc
... recovery; and - two month periods of recovery are alternated with a 10 month period without recovery. 0.00013 S 1 E- 05E o 1E-06= ç 1E-07 1E-08 6 7 time (years) continuous recovery - 10month ... ONONONONONONONONONON •-Ht-t-T-ioooooo OHHMNHOKOOCO O ON ^ |- 00 ON ON ON OOC^t-^ONONONONON (nr^^ooNONONONONONON ^-OOONONONONONONONON ONONONONONONONONONON ^f m ~H...
Ngày tải lên: 14/02/2014, 08:20