http://reply.papertrans.cn/3/259/25841/25841-31.png
Submitted on: 01 May 2012.
Revised on: 08 May 2012.
Accepted on: 13 May 2012.
PURE AND APPLIED CHEMISTRY
http://reply.papertrans.cn/3/259/25841/25841-33.png
http://reply.papertrans.cn/3/259/25841/25841-34.png
Submitted on: 09 May 2012.
Revised on: 20 May 2012.
Accepted on: 13 June 2012.
PURE AND APPLIED CHEMISTRY
http://reply.papertrans.cn/3/259/25841/25841-36.png