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Previous by Date: Subject: [DCHAS-L] Chemical Safety headlines from Google (9 articles) Date: Friday, March 6, 2015 8:02:01 AM Author: "Secretary, ACS Division of Chemical Health and Safety" <secretary**At_Symbol_Here**DCHAS.ORG> |
Next by Date: Subject: Re: [DCHAS-L] Mercury in laboratory effluent Date: Fri, 6 Mar 2015 15:54:27 +0000 Author: "Tobias, Bruce" |
Hello,
We consider these waste as chemical waste and get rid of them (thousands of testing tubes in labpacks) through our chemical waste supplier.
Have a nice day!
Carole
Carole Savoie, Ph.D. chimie | Conseill=E8re principale en sant=E9 et s=E9curit=E9 / Responsable de la radioprotection | Secteur sant=E9 et s=E9curit=E9
=C9cole Polytechnique de Montr=E9al| Pavillon principal, local A-429.19.1 | C.P. 6079, succ. Centre-ville, Montr=E9al, Qu=E9bec, Canada, H3C 3A7
T=E9l: (514) 340-4711, poste 4547
carole.savoie**At_Symbol_Here**polymtl.ca | http://www.polymtl.ca/sst/
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De : Ernie Lippert [mailto:ernielippert**At_Symbol_Here**TOAST.NET]
Envoy=E9 : 5 mars 2015 10:56
=C0 : DCHAS-L**At_Symbol_Here**MED.CORNELL.EDU
Objet : [DCHAS-L] Mercury in laboratory effluent
The ASTM method D1252-88, Standard Test Methods for Chemical Oxygen Demand (Dichromate Oxygen Demand) of Water is used as the basis of determining the COD for other materials, not just [waste] water. This procedure specifies the use of 1 gm of mecuric sulfate per sample to minimize the effect of chloride ions which may be present. The waste from such determinations contains considerable mercury. There are likely to be other procedures in which mercury is used. How do academic and commercial labs economically handle such waste that consists mostly of water containing Hg and a few other less regulated contaminants? I believe the current allowable level for discharge is 1.0 ppb Hg.
Regards,
Ernest Lippert
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