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Table 1 Physicochemical properties of 17 typical pesticides commonly used in tomato greenhouses in Shouguang

From: Experimental study on photodegradation and leaching of typical pesticides in greenhouse soil from Shouguang, Shandong Province, East China

Category

Pesticide

CAS number

Molecular formula

Molecular weight

Water solubility* (mg/L)

Vapor pressure# (Pa)

Henry constant* (Pa·m3/mol)

logKow* (pH = 7)

GUS

logKoa

Koc (mL/g)

Insecticide

Nitenpyram

150824-47-8

C11H15ClN4O2

270.72

5.90E+05

1.10E-06

3.54E-13

-0.66

2.01

7.83

60

Acetamiprid

135410-20-7

C10H11ClN4

222.67

2.95E+03

1.73E-07

5.30E-08

0.8

0.94

6.35

343

Chlorantraniliprole

500008-45-7

C18H14BrCl2N5O2

483.15

8.80E-01

6.30E-12

3.20E-09

2.86

3.51

-

330

Emamectin benzoate

155569-91-8

C56H81NO15

1008.24

2.40E+01

4.00E-10

283

Buprofezin

69327-76-0

C16H23N3OS

305.44

4.60E-01

4.20E-05

2.80E-02

4.93

0.45

8.7

Avermectin B1A

65195-55-3

C48H72O14

873.08

1.00E-02

2.00E-07

4.48

29.75

5638

Fungicide

Carbendazim

10605-21-7

C9H9N3O2

191.19

8.00E+00

9.00E-05

3.60E-03

1.48

2.21

10.54

350

Oxadixyl

77732-09-3

C14H18N2O4

278.30

5.96E+02

2.70E-05

5.86E-07

1.4

3.89

10.3

169

Metalaxyl

57837-19-1

C15H21NO4

279.33

8.40E+03

7.50E-04

1.60E-05

1.75

2.06

8.67

163

Diethofencarb

87130-20-9

C14H21NO4

267.32

2.76E+01

9.94E-06

9.12E-05

2.89

1.09

7.36

271

Boscalid

188425-85-6

C18H12Cl2N2O

343.21

4.60E+00

7.20E-07

5.18E-05

2.96

2.68

12.72

772

Tebuconazole

107534-96-3

C16H22ClN3O

307.82

3.60E+01

1.30E-06

1.00E-05

3.7

1.86

11.93

1000

Isoprothiolane

50512-35-1

C12H18O4S2

290.40

5.40E+01

1.88E-02

1.00E-01

3.3

8.69

1352

Hexaconazole

79983-71-4

C14H17Cl2N3O

314.21

1.80E+01

1.80E-05

3.33E-04

3.9

2.31

10.77

1040

Difenoconazole

119446-68-3

C19H17Cl2N3O3

406.26

1.50E+01

3.33E-08

9.00E-07

4.36

0.83

13.88

6120

Pyraclostrobin

175013-18-0

C19H18CIN3O4

387.82

1.90E+00

2.60E-08

5.31E-06

3.99

0.05

17.32

9300

Trifloxystrobin

141517-21-7

C20H19F3N2O4

408.37

6.10E-01

3.40E-06

2.30E-03

4.5

0.15

9.86

2377

  1. Above data are from PPBD database (https://sitem.herts.ac.uk/aeru/ppdb/index.htm); * represents the defined value of the parameter at 20 °C; # represents the defined value of the parameter at 25 °C; GUS represents groundwater ubiquity score, GUS < 1.8 indicates difficulty in leaching, GUS between 1.8 and 2.8 indicates possible leaching, GUS > 2.8 indicates easy leaching; GUS and Koc data were collected from https://www.pesticideinfo.org/; logKoa from EPI Suite software; “–” indicates that no valid data was found