A researcher was attempting to quantify the amount of (DDT) in spinach with gas chromatography using a chloroform internal standard. To begin, the researcher examined a sample containing 6.37 mg / L DDT standard and 3.20 mg / L chloroform as the internal standard, producing peak areas of 5019 and 8179 , respectively.

Then, the researcher collected 5.29 g of spinach, homogenized the sample, and extracted the DDT using an established method (assume 100% extraction), producing a 2.40 mL volume of unknown sample. The researcher then prepared a sample that contained 0.750 mL of the unknown sample and 1.25 mL of 11.45 mg/L chloroform, which was diluted to a final volume of 25.00 mL. The sample was analzed using GCMS, producing peak areas of 6821 and 14061 for the unknown and chloroform, respectively.

Requried:
Calculate the DDT concentration in the spinach sample. Express the final answer as milligrams DDT per gram of spinach.