Effects of Dissolved Organic Matter on Uptake and Translocation of Lead in Brassica chinensis and Potential Health Risk of Pb
Abstract
:1. Introduction
2. Materials and Methods
2.1. Soil and DOM Preparation
2.2. Experimental Setup
2.3. Plant Culture, Sample Collection and Analysis
2.4. The Soil-to-Plant Translocation Factor of Pb and Specific Lead Uptake (SLU)
2.5. Potential Health Risk of Pb
2.6. Statistical Analysis
3. Results
3.1. Plant Growth
3.2. Pb Concentrations inShoots and Roots
3.3. Translocation of Pb from Soil to Shoots
3.4. Specific Lead Uptake
3.5. Potential Health Risks of Pb
4. Discussion
5. Conclusions
Acknowledgments
Author Contributions
Conflicts of Interest
References
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Source of DOM | pH | TOC mg·L−1 | Total Pb mg·L−1 | Total Cd mg·L−1 | Total Cr mg·L−1 | Total Cu mg·L−1 | Total Zn mg·L−1 |
---|---|---|---|---|---|---|---|
COF | 7.21 | 69 | nd | nd | nd | 0.01 | 0.03 |
COM | 7.16 | 482 | nd | nd | nd | 0.02 | 0.09 |
CHM | 7.19 | 6605 | nd | nd | 0.02 | 0.03 | 2.29 |
DOM Source | DOM Dosage | Shoot Biomass (g) | Root Biomass (g) | ||||
---|---|---|---|---|---|---|---|
Pb0 | Pb100 | Pb800 | Pb0 | Pb100 | Pb800 | ||
control | 0 | 3.39 ± 0.24a a | 3.59 ± 0.33a a | 3.29 ± 0.43a a | 0.10 ± 0.02a a | 0.15 ± 0.03a a | 0.11 ± 0.02a a |
COF | Low | 3.60 ± 0.49a a | 3.84 ± 0.30a a | 3.31 ± 0.17a a | 0.13 ± 0.04a a | 0.12 ± 0.02a a | 0.08 ± 0.02a a |
High | 3.67 ± 0.27a a | 3.65 ± 0.09a a | 3.60 ± 0.23a a | 0.12 ± 0.02a a | 0.11 ± 0.01a a | 0.12 ± 0.01a a | |
COM | Low | 3.46 ± 0.13a a | 3.82 ± 0.42a a | 4.07 ± 0.69a a | 0.11 ± 0.01a a | 0.15 ± 0.04a a | 0.12 ± 0.03a a |
High | 3.61 ± 0.36a a | 4.06 ± 0.56a a | 3.54 ± 0.18a a | 0.12 ± 0.03a a | 0.18 ± 0.04a a | 0.11 ± 0.01a a | |
CHM | Low | 3.56 ± 0.21a a | 4.01 ± 1.04a a | 4.09 ± 0.39a a | 0.09 ± 0.02a a | 0.11 ± 0.06a a | 0.13 ± 0.01a a |
High | 3.78 ± 0.71a a | 4.46 ± 0.74a a | 1.89 ± 0.35b b | 0.09 ± 0.03a a | 0.14 ± 0.05a a | 0.02 ± 0.01b b |
DOM Source | DOM Dosage | Pb Concentration in Shoots (mg·kg−1) | Pb Concentration in Roots (mg·kg−1) | ||||
---|---|---|---|---|---|---|---|
Pb0 | Pb100 | Pb800 | Pb0 | Pb100 | Pb800 | ||
control | 0 | 4.05 ± 0.31a c | 6.73 ± 0.26a b | 7.42 ± 1.33c a | 2.13 ± 0.17b c | 24.99 ± 1.50bc b | 467.37 ± 23.35bc a |
COF | Low | 4.62 ± 1.78a b | 6.76 ± 0.31a b | 10.72 ± 1.43b a | 2.00 ± 0.19b c | 25.58 ± 0.83b b | 442.16 ± 15.88bc a |
High | 3.87 ± 0.59a c | 8.56 ± 1.72a b | 13.28 ± 1.06b a | 8.78 ± 1.24a c | 23.97 ± 1.63bc b | 437.54 ± 27.72bc a | |
COM | Low | 3.72 ± 0.74a b | 7.36 ± 0.47a a | 9.66 ± 1.13bc a | 2.66 ± 0.45b c | 25.08 ± 0.65b b | 449.50 ± 29.88bc a |
High | 3.88 ± 0.22a c | 7.70 ± 1.31a b | 11.79 ± 1.98b a | 9.17 ± 1.64a c | 19.81 ± 1.42c b | 403.09 ± 20.15c a | |
CHM | Low | 3.14 ± 0.25a c | 7.39 ± 0.70a b | 10.94 ± 2.36b a | 8.56 ± 0.43a c | 37.34 ± 3.49a b | 507.21 ± 29.27b a |
High | 3.90 ± 0.15a c | 7.05 ± 0.71a b | 18.10 ± 1.72a a | 8.97 ± 0.72a c | 42.86 ± 5.58a b | 737.83 ± 82.58a a |
DOM Source | DOM Dosage | Pb Translocation Factor | ||
---|---|---|---|---|
Pb0 | Pb100 | Pb800 | ||
control | 0 | 0.57 ± 0.04a a | 0.063 ± 0.002a b | 0.009 ± 0.003b c |
COF | Low | 0.65 ± 0.25a a | 0.063 ± 0.003a b | 0.013 ± 0.002b c |
High | 0.54 ± 0.08a a | 0.080 ± 0.016a b | 0.016 ± 0.002ab c | |
COM | Low | 0.52 ± 0.10a a | 0.069 ± 0.004a b | 0.012 ± 0.001b c |
High | 0.54 ± 0.03a a | 0.072 ± 0.012a b | 0.015 ± 0.002ab c | |
CHM | Low | 0.44 ± 0.02a a | 0.069 ± 0.007a b | 0.014 ± 0.003ab c |
High | 0.55 ± 0.09a a | 0.066 ± 0.003a b | 0.022 ± 0.003a c |
Amount of Pb | COF | COM | CHM | |||
---|---|---|---|---|---|---|
Low | High | Low | High | low | High | |
Ip (%) | 44 | 112 | 30 | 59 | 47 | 144 |
Ia (kg) | 2974 | 5287 | 2018 | 3943 | 3174 | 9640 |
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Li, R.; Zhou, Z.; Xie, X.; Li, Y.; Zhang, Y.; Xu, X. Effects of Dissolved Organic Matter on Uptake and Translocation of Lead in Brassica chinensis and Potential Health Risk of Pb. Int. J. Environ. Res. Public Health 2016, 13, 687. https://doi.org/10.3390/ijerph13070687
Li R, Zhou Z, Xie X, Li Y, Zhang Y, Xu X. Effects of Dissolved Organic Matter on Uptake and Translocation of Lead in Brassica chinensis and Potential Health Risk of Pb. International Journal of Environmental Research and Public Health. 2016; 13(7):687. https://doi.org/10.3390/ijerph13070687
Chicago/Turabian StyleLi, Renying, Zhigao Zhou, Xiaojin Xie, Yingxue Li, Yaohong Zhang, and Xianghua Xu. 2016. "Effects of Dissolved Organic Matter on Uptake and Translocation of Lead in Brassica chinensis and Potential Health Risk of Pb" International Journal of Environmental Research and Public Health 13, no. 7: 687. https://doi.org/10.3390/ijerph13070687