Submitted on: 10 December 2002.
Revised on: 23 March 2003.
Accepted on: 12 May 2003.
___________________JOURNAL OF CHROMATOGRAPHIC SCIENCE
http://reply.papertrans.cn/2/159/15855/15855-32.png
Submitted on: 31 May 2008.
Revised on: 16 September 2008.
Accepted on: 12 October 2008.
___________________JOURNAL OF CHROMATOGRAPHIC SCIENCE
http://reply.papertrans.cn/2/159/15855/15855-34.png
http://reply.papertrans.cn/2/159/15855/15855-35.png
Submitted on: 07 September 2011.
Revised on: 01 October 2011.
Accepted on: 30 October 2011.
___________________JOURNAL OF CHROMATOGRAPHIC SCIENCE