0731. Solving a chemistry problem

Product description

• To analyze Rhine River water for the presence of pesticides, a 100-liter sample was pumped through a pre-column packed with sorbent (97% recovery) and then eluted from the surface of the sorbent with 10 ml of solvent. 1 ml of a standard aniline solution with a concentration of 0.1 mg/l was added to the resulting solution. The mixture was analyzed by HPLC with a diode array detector. Peaks of the following substances were detected

Spica substance, units. Spica substance, units.

aniline 29 metabromuron 262

carbendazim 135 methesechlor 13

metamitron 78 propazine 15

chlordiazon 26 warfarin 82

dimethoate 14 3,3-dichlorobenzidine 27

monomethylmethoxuron 8 barban 19

aldicarb 81 alachlor 10

bromacil 54 nitralin 13

cyanazine 76 dinoseb 11

2-nitrophenol 34 dinoterb 15

chlortoluron 28 phoxim 8

atrazine 10 nitrophen 124

diuron 1129 trifluralin 46

Analysis of standard samples of pesticides with a concentration of 0.1 mg/l gave the following results:

Spica substance, units. Spica substance, units.

aniline 40 metabromuron 38

carbendazim 42 methesechlor 41

metamitron 46 propazine 39

chlordiazon 38 warfarin 43

dimethoate 39 3,3-dichlorobenzidine 48

monomethylmethoxuron 41 barban 52

aldicarb 40 alachlor 37

bromacil 45 nitralin 44

cyanazine 42 dinoseb 56

2-nitrophenol 40 dinoterb 54

chlortoluron 44 phoxim 68

atrazine 36 nitrophen 39

diuron 35 trifluralin 41

Calculate the content of pesticides in Rhine water, mg/l.

Additional information

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