Table 3 Mean concentration of ETEs in highland barley samples (mg/kg)

Baida Township (n = 2)

3.879 ± 0.266

37.830 ± 3.564

13.195 ± 0.233

0.509 ± 0.001

0.005 ± 0.002

21.205 ± 2.355

Dalong Township (n = 3)

4.251 ± 1.081

51.100 ± 16.190

13.487 ± 0.337

0.728 ± 0.352

0.002 ± 0.002

27.127 ± 1.947

Exi Township (n = 8)

3.896 ± 0.732

52.531 ± 13.235

13.752 ± 0.687

0.217 ± 0.134

0.002 ± 0.001

22.913 ± 2.895

Kangsha Township (n = 9)

4.166 ± 0.649

76.837 ± 25.168

13.548 ± 1.358

0.615 ± 0.371

0.003 ± 0.001

25.862 ± 3.973

Najiu Township (n = 15)

3.424 ± 0.542

84.864 ± 25.234

14.099 ± 1.659

0.404 ± 0.212

0.002 ± 0.001

23.741 ± 2.950

Mali Township (n = 6)

4.443 ± 0.835

58.553 ± 34.904

13.988 ± 1.826

0.729 ± 0.244

0.010 ± 0.004

22.345 ± 5.951

Shuodu Township (n = 15)

3.129 ± 0.510

139.636 ± 70.124

14.966 ± 1.003

0.228 ± 0.109

0.002 ± 0.001

24.630 ± 1.937

Xinrong Township (n = 3)

3.658 ± 0.480

107.737 ± 47.750

13.563 ± 0.388

0.566 ± 0.255

0.009 ± 0.011

23.823 ± 1.839

Yuxi Township (n = 2)

4.735 ± 0.761

60.480 ± 2.560

14.440 ± 2.843

0.661 ± 0.082

0.021 ± 0.011

27.825 ± 8.365

Zhongyi Township (n = 4)

3.223 ± 0.503

97.742 ± 33.756

13.497 ± 1.957

0.353 ± 0.066

0.003 ± 0.001

23.605 ± 3.362

Zituo Township (n = 18)

3.223 ± 0.454

79.218 ± 42.378

13.644 ± 1.301

0.229 ± 0.120

0.001 ± 0.001

21.831 ± 1.210

Luolong County (n = 85)

3.550 ± 0.677

81.170 ± 38.143

14.030 ± 1.419

0.350 ± 0.198

0.003 ± 0.006

23.580 ± 3.103

GB 2762–2017/GB 2715–2016

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