Boron Trichloride (BCl3)

2011 ◽  
pp. 277-278
Keyword(s):  
2005 ◽  
Vol 340 (3) ◽  
pp. 481-487 ◽  
Author(s):  
Juan Xie ◽  
Mickaël Ménand ◽  
Jean-Marc Valéry
Keyword(s):  

2010 ◽  
Vol 86 (6) ◽  
pp. 593-596 ◽  
Author(s):  
P. W. N. M. van Leeuwen ◽  
W. L. Groeneveld

1977 ◽  
Vol 60 (5) ◽  
pp. 1070-1076 ◽  
Author(s):  
Haig Agemian ◽  
Alfred S Y Chau

Abstract A multiresidue method is presented for the gas-liquid chromatographic determination of phenoxyalkanoic acid herbicides in natural waters. Extraction efficiencies of different organic solvents are considered in developing a solvent extraction scheme for these herbicides from water. Reactions for derivatizing these compounds by using pentafluorobenzyl bromide, boron trichloride-2-chloroethanol, and dicyclohexylcarbodiimide-2-chloroethanol were studied in order to obtain extracts with low blanks to provide the lowest detection limits. Advantages and disadvantages of the 3 methods are discussed. Retention times are twice as long for the pentafluorobenzyl (PFB) esters as for the 2-chloroethyl (2-Cl) esters under the same conditions, although electron capture sensitivity to the former was greater. The PFB esters are easier to form, but the 2-Cl reaction is more specific for these herbicides. Solutions from the boron trichloride reaction gave the cleanest blanks.


1962 ◽  
Vol 0 (0) ◽  
pp. 761-767 ◽  
Author(s):  
T. G. Bonner ◽  
E. J. Bourne ◽  
S. McNally
Keyword(s):  

Sign in / Sign up

Export Citation Format

Share Document