Guidelines for care & Use of Dry Solvent Stills [Example]

7. Dr. Brad Jones – Lab Room # 118
SPECIFIC PROCEDURES FOR SAFE REMOVAL OF HIGHLY TOXIC WASTE
Consult with your research advisor concerning proper methods for packaging and storing extremely
hazardous waste. Research usually involves working with selective types or classes of chemicals. Prepare
brief summaries in this section for handling spent chemicals peculiar to your lab.
Trace and ultra trace metal standards are prepared at concentration well below the toxic level.
For example, Ca, Zn, Ba at the ppb and sub-ppb level. Standards containing HNO3 are neutralized prior
to disposal. They are then safely disposed of with plenty of water down the sink.
Typical relatively benign chemical waste generated in this lab is described as follows:
Water (Acidic) with:
(Color varies with component concentration - e.g., when Copper predominates, the color will
be bluish, but all components are still less than 1%)
� Cadmium Chloride, less than 1%
� Cadmium Bromide, less than 1%
� Lead Nitrate, less than 1%
� Copper nitrate, less than 1%
� Lanthanum nitrate, less than 1%
� Thulium nitrate, less than 1%
� Yetterbium nitrate, less than 1%
� Europium nitrate, less than 1%
� Lutetium nitrate, less than 1%
� Gadolinium nitrate, less than 1%
� Samarium nitrate, less than 1%
� Promethium nitrate, less than 1%
� Lutetium nitrate, less than 1%
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