ABSTRACT
Pharmaceuticals.and.personal-care.products.used.by.humans.are.often.excreted.or. washed.down.drains. to.wastewater. treatment.plants,.where. they.can.be.bound. to. particulate. in. sludge.or. discharged. into. local.waters. and. eventually.bind. to. sediments..Similarly,.antibiotics.and.hormones.that.are.used.in.farm.animal.operations. can.become.bound.to.manure,.soil.that.is.amended.with.this.manure,.and.also.on. air.particulate.originating. from.those. farms..When.pharmaceuticals.are.bound. to. particles,.it.is.less.likely.that.they.will.undergo.biotransformation..However,.these. compounds. can. desorb. and. become. more. bioavailable. should. conditions. change,. making. this.process. favorable..Therefore,. it. is. important. for. researchers. to. report.
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