id	keyword
ajeem-1040	nil nil
ajeem-1040	solid
ajeem-1040	liquid
ajeem-1040	metals
ajeem-1040	samples
ajeem-1040	waste
ajeem-1040	lead
ajeem-1040	cadmium
ajeem-1040	water
ajeem-1040	copper
ajeem-1040	concentrations
ajeem-1040	chromium
ajeem-1040	environment
ajeem-1040	soil
ajeem-1040	nil liquid