[Phytonet] background values

[Shaneel Chandra]

Dr Ismail

Which matricx are you seeking background values in ?  I.e. plant 
tissue/soil/wastewater?

Shaneel

Shaneel Chandra
School of Chemical Sciences
Faculty of Science & Technology
University of the South Pacific
SUVA

Phone [+679] 3232552
Fax     [+679] 3231512
----- Original Message ----- 
From: "sarwat ismail" <sarwat_ismail at yahoo.com>
To: <phytonet at listserv.cce.unipr.it>
Sent: Saturday, March 04, 2006 7:12 PM
Subject: [Phytonet] background values


Dear friends,

Could anyone tell me the background values for Pb, Cu,
Cd and Zn. I ahve found the the value of Zn mentioned
less then 100ppm(Bryan and langstan, 1992) and for Cd
less then 1.00ppm(Sadiq 1992). Should I consider them
1.00 andd 100.00 because I have to put them in the
formula for calculating Pollution Load Index?

thanking you all.


Dr. sarwat ismail
SSO
PCSIR, Labs., Karachi
Paksitan

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