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Journal of Analytical Science and Technology

Table 3 Analysis of variance

From: Fast determination of phthalates in mussel samples by micro-matrix solid-phase dispersion (micro-MSPD) coupled with GC–MS/MS

 

Effect

Coefficient

p

DMP

Sample amount

5.570

2.785

0.159

Dispersant agent A

1.120

0.560

0.702

Dispersant agent B

9.045

4.523

0.070

Elution solvent

5.585

2.793

0.158

Sample × dispersant A

 − 4.055

 − 2.027

0.251

Sample × dispersant B

5.570

2.785

0.159

Sample × volume

13.770

6.885

0.032

DEP

Sample amount

 − 9.30

 − 4.65

0.206

Dispersant agent A

5.74

2.87

0.372

Dispersant agent B

11.90

5.95

0.142

Elution solvent

 − 1.86

 − 0.93

0.747

Sample × dispersant A

 − 2.19

 − 1.09

0.706

Sample × dispersant B

6.16

3.08

0.345

Sample × volume

27.36

13.68

0.032

DBP

Sample amount

6.582

3.291

0.611

Dispersant agent A

6.883

3.441

0.596

Dispersant agent B

9.253

4.626

0.490

Elution solvent

12.973

6.486

0.360

Sample × dispersant A

 − 0.512

 − 0.256

0.967

Sample × dispersant B

15.398

7.699

0.297

Sample × volume

13.978

6.989

0.332

DEHP

Sample amount

 − 4.552

 − 2.276

0.054

Dispersant agent A

 − 8.913

 − 4.456

0.015

Dispersant agent B

 − 10.443

 − 5.221

0.011

Elution solvent

7.807

3.904

0.019

Sample × dispersant A

1.572

0.786

0.290

Sample × Dispersant B

 − 9.617

 − 4.809

0.013

Sample × volume

 − 4.317

 − 2.159

0.059

BzBP

Sample amount

11.385

5.692

0.010

Dispersant agent A

 − 8.820

 − 4.410

0.017

Dispersant agent B

0.800

0.400

0.562

Elution solvent

10.475

5.237

0.012

Sample × dispersant A

 − 9.585

 − 4.792

0.014

Sample × dispersant B

 − 0.285

 − 0.143

0.829

Sample × volume

6.510

3.255

0.030

DnOP

Sample amount

8.980

4.490

0.125

Dispersant agent A

 − 2.720

 − 1.360

0.520

Dispersant agent B

8.050

4.025

0.149

Elution solvent

5.480

2.740

0.259

Sample × dispersant A

 − 8.665

 − 4.332

0.133

Sample × dispersant B

4.595

2.298

0.321

Sample × volume

3.905

1.953

0.382

  1. Effects and estimated coefficients for six phthalates
  2. DMP dimethyl phthalate, DEP diethyl phthalate, DBP dibutyl phthalate, BzBP benzyl butyl phthalate, DEHP diethyl hexyl phthalate, DnOP di-n-octyl phthalate
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