A researcher was attemping to quantify the amount of DDT (dichlorodiphenyltrichloroethane) in spinach with gas chromotography using a chloroform internal standard. To begin, the researcher examined a sample containing 8.76 mg/L DDT standard and 3.60 mg/L chloroform as the internal standard, producing peak areas of 4517 and 10571, respectively.
Need Help Writing an Essay?
Tell us about your assignment and we will find the best writer for your paper.
Get Help NowThen, the researcher collected 10.67 g of spinach, homogenized the sample, and extracted the DDT using an established method (assume 100% extraction), producing a 3.68 mL volume of unknown sample. The researcher then prepared a sample that contained 1.00 mL of the unknown sample and 2.00 mL of 12.41 mg/L chloroform, which was diluted to a final volume of 25.00 mL. The sample was analzed using GCMS, producing peak areas of 6693 and 12819 for the unknown and chloroform, respectively.
Calculate the DDT concentration in the spinach sample. Express the final answer as milligrams DDT per gram of spinach.
PLACE THIS ORDER OR A SIMILAR ORDER AND GET HELP FROM A CERTIFIED WRITER:)
Click the button below to order this paper AND ENJOY OUR DISCOUNT.
The post Calculate the DDT concentration in the spinach sample. Express the final answer as milligrams DDT per gram of spinach. appeared first on Nonplagiarizedpapers.
I lOVE this Professional essay writing website. This is perhaps the fifth time I am placing an order with them, and they have not failed me not once! My previous essays and research papers were of excellent quality, as always. With this essay writing website, you can order essays, coursework, projects, discussion, article critique, case study, term papers, research papers, research proposal, capstone project, reaction paper, movie review, speech/presentation, book report/review, annotated bibliography, and more.
Post your homework questions and get original answers from qualified tutors!
