D ete ctio no fh eavym eta li np la n ts-Inmanyde velopingcountries,peoplear econstantlyexposedt ohea vymetalsthr oughcontaminatedwaterandfood.-Plantsar eoftenusedasbioindicat orst omonit orenvir onmentalpollution.-Thisisbecausethe ycanabsorbandaccumulatehea vymetalsfr omthesoilandwater .-Thus,b ystudyingthele velsofhea vymetalsinplants,wecandetectenvir onmentalcontamination.Hea vymetalpollutionisaseriouspr obleminmanypar tsoftheworld.Inde velopingcountries,peoplear eoftenexposedt ohea vymetalsthr oughcontaminatedwaterandfood.Plantsar eoftenusedasbioindicat orst omonit orenvir onmentalpollution.Thisisbecausethe ycanabsorbandaccumulatehea vymetalsfr omthesoilandwater .Thus,b ystudyingthele velsofhea vymetalsinplants,wecandetectenvir onmentalcontamination.1.Manyhea vymetalsar et o xict oplantsandcancauseseriousdamage.2.Ther ear ese ver alwa yst odetecthea vymetalcontaminationinplants.3.Themostcommonmethodisthr oughtheuseofX -rayuor escence.4.Thismethodisr elativ elyquickandeasy ,butitisnotalwa ysaccur ate.5.Ther ear eothermethodsofdetectionthatma ybemor eaccur ate,butthe yar emor eexpensiv eandtime-consuming.1 .M an yh eavym eta lsa ret o xict op la n tsa n dc a nc a u ses e rio usd am ag e.Manyhea vymetalsar et o xict oplantsandcancauseseriousdamage.Lead,forexample,canaccumulateinthelea vesandcausethemt oturny ellowandfalloff.Cadmiumcancausether ootst odie.Coppercaninter fer ewiththeplant' sabilityt otak eupwater .2 .T herea res e ve ra lw ayst od ete cth eavym eta lc o nta m in atio ni np la n ts .Ther ear ese ver alwa yst odetecthea vymetalcontaminationinplants.Onewa yist otesttheplantforthepr esenceofhea vymetals.Anotherwa yist olookforsignsofmetalcontamination,suchasdiscolor ationordeformities.3 .T hem ostc o m monm eth o di st h ro ug ht h eu seo fX -ra y uo re sc e n ce .Themostcommonmethodfordetectionofhea vymetalsinplantsisX -rayuor escence.ThismethodusesanX -raysour cet oex citetheat omsinasample,causingthemt oemitelectr ons.Theemittedelectr onsar ethendetectedandusedt