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Atomic absorption spectroscopy was used with the method of standard additions to determine the concentration of cadmium in a sample of an industrial waste stream. For the addition, 10.0 μL of a 1000.0 μg/mL Cd standard was added to 10.0 mL of the unknown solution. The results obtained are shown in the table. Absorbance Reagent blank 0.023 Sample 0.498 Sample plus addition 0.714 What is the concentration of the cadmium in the waste stream sample?

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catcutation o unkrousn conuentiationt in method o standard additions in spoctro LesTy, shen only one addition o me standand sution is addesd to the sample, is comie d out using the tion the somple. A, = The abor bane or the sample without standand solution = The concentrator ot rtandondloluhon V.-The Volume ftantnd Solutio add ed to the- Somp = The volume o↓ te sample whout Stan dan d V," Solu tion va = 10.0mL The absorbance the sample ulmout stan dan Solu tion must ke adjusted with the absor bance ot the meaent blonk as follo cs anventing the volume a standan dtion added the Sompla into ml uni -

Do0HL att o thete values in eqci Subs Hta concenta tron o cadmium io a Sample of the industrial a ste stneom i an actual geagent Hank abon ban ( e o.oh8,he abidban ce 익 the eample withou stondan d solution.. The actaal Concentza ton o cadmium in a Sample ot the industrial ωaste cream is "Х The Pencent e uuted by using water a the blank intead the easg calaulated wth exCactual) Substrhuh.nl vataes, we hove a 'j.ere,ovot x loo

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Answer 1

catcutation o unkrousn conuentiationt in method o standard additions in spoctro LesTy, shen only one addition o me standand sution is addesd to the sample, is comie d out using the tion the somple. A, = The abor bane or the sample without standand solution = The concentrator ot rtandondloluhon V.-The Volume ftantnd Solutio add ed to the- Somp = The volume o↓ te sample whout Stan dan d V," Solu tion va = 10.0mL The absorbance the sample ulmout stan dan Solu tion must ke adjusted with the absor bance ot the meaent blonk as follo cs anventing the volume a standan dtion added the Sompla into ml uni -

Do0HL att o thete values in eqci Subs Hta concenta tron o cadmium io a Sample of the industrial a ste stneom i an actual geagent Hank abon ban ( e o.oh8,he abidban ce 익 the eample withou stondan d solution.. The actaal Concentza ton o cadmium in a Sample ot the industrial ωaste cream is "Х The Pencent e uuted by using water a the blank intead the easg calaulated wth exCactual) Substrhuh.nl vataes, we hove a 'j.ere,ovot x loo