Alloway, B. J. (2013). Sources of heavy metals and metalloids in soils. In Heavy metals in soils (pp. 11-50). Springer Netherlands.
Burnol, A., Duro, L., & Grive, M. (2006). Eléments traces métalliques. Guide méthodologique. Recommandations pour la modélisation des transferts des éléments traces métalliques dans les sols et les eaux souterraines.
Brady, J. P., Ayoko, G. A., Martens, W. N., & Goonetilleke, A. (2014). Temporal trends and bioavailability assessment of heavy metals in the sediments of Deception Bay, Queensland, Australia. Marine Pollution Bulletin, 89(1), 464-472.
Capangpangan, R. Y., Cane, A. L. F., Lincuna, M. E., Ra, J. A., Obena, R. A. P., & Pineda, C. P. (2016). Speciation and Bioavailability of Trace Metals (Cd, Cu and Pb) in Marine Sediment Samples from Placer Bay near Manila Mining Corporation, Surigao City, Philippines. Annals of Studies in Science and Humanities, 1(2), 29-52.
Clemente, E., Sera, K., Futatsugawa, S., & Murao, S. (2004). PIXE analysis of hair samples from artisanal mining communities in the Acupan region, Benguet, Philippines. Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 219, 161-165.
Corpus, T. J., David, C. P., Murao, S., & Maglambayan, V. (2011). Small-scale gold mining in the Ambalanga catchment, Philippines: its control on mercury methylation in stream sediments. International Journal of Environmental Sciences, 2, 1048-1059.
DENR Administrative Order No. 08 Series of 2016 (2016). Water Quality Guidelines and General Effluent Standards of 2016, pp. 5-7.
Fairgray, M. E., Webster-Brown, J. G., & Pope, J. (2020). Testing Geochemical Predictions of Trace Element Toxicity and Bioavailability at a Rehabilitated Mine Site. Mine Water and the Environment, 39(1), 75-92.
Förstner, U., & Wittmann, G. T. (2012). Metal pollution in the aquatic environment. Springer Science & Business Media.
Goher, M. E., Farhat, H. I., Abdo, M. H., & Salem, S. G. (2014). Metal pollution assessment in the surface sediment of Lake Nasser, Egypt. The Egyptian Journal of Aquatic Research, 40(3), 213-224.
Gu, Y. G., Lin, Q., Yu, Z. L., Wang, X. N., Ke, C. L., & Ning, J. J. (2015). Speciation and risk of heavy metals in sediments and human health implications of heavy metals in edible nekton in Beibu Gulf, China: A case study of Qinzhou Bay. Marine Pollution Bulletin, 101(2), 852-859.
Islam, M. S., Ahmed, M. K., Raknuzzaman, M., Habibullah-Al-Mamun, M., & Islam, M. K. (2015). Heavy metal pollution in surface water and sediment: a preliminary assessment of an urban river in a developing country. Ecological Indicators, 48, 282-291.
Kaya, A., & Yukselen, Y. (2005). Zeta potential of clay minerals and quartz contaminated by heavy metals. Canadian Geotechnical Journal, 42(5), 1280-1289.
Li, X., Liu, L., Wang, Y., Luo, G., Chen, X., Yang, X., et al. (2012). Integrated assessment of heavy metal contamination in sediments from a coastal industrial basin, NE China. PloS One, 7(6), e39690.
Magu, M. M., Govender, P. P., & Ngila, J. C. (2016). Geochemical modelling and speciation studies of metal pollutants present in selected water systems in South Africa. Physics and Chemistry of the Earth, Parts A/B/C, 92, 44-51.
Manta, D. S., Angelone, M., Bellanca, A., Neri, R., & Sprovieri, M. (2002). Heavy metals in urban soils: a case study from the city of Palermo (Sicily), Italy. Science of the Total Environment, 300(1), 229-243.
Martin, J. M., & Whitfield, M. (1983). The significance of the river input of chemical elements to the ocean. In Trace metals in sea water (pp. 265-296). Springer US.
Muller, G., 1981. Die schwermetallbelstung der sedimente des neckars und seiner nebenflusse: eine estandsaufnahme. Chem. Zeitung 105, 157–164.
Parkhurst, D. L., & Appelo, C. A. J. (2013). Description of input and examples for PHREEQC version 3: a computer program for speciation, batch-reaction, one-dimensional transport, and inverse geochemical calculations (No. 6-A43). US Geological Survey.
Reddy, K. J., Wang, L., & Gloss, S. P. (1995). Solubility and mobility of copper, zinc and lead in acidic environments. Plant and Soil, 171(1), 53-58.
Sharma, V. K., & Sohn, M. (2009). Aquatic arsenic: toxicity, speciation, transformations, and remediation. Environment International, 35(4), 743-759.
Shikazono, N., Tatewaki, K., Mohiuddin, K. M., Nakano, T., & Zakir, H. M. (2012). Sources, spatial variation, and speciation of heavy metals in sediments of the Tamagawa River in Central Japan. Environmental Geochemistry and Health, 34(1), 13-26.
da Silva Cerozi, B., & Fitzsimmons, K. (2016). The effect of pH on phosphorus availability and speciation in an aquaponics nutrient solution. Bioresource Technology, 219, 778-781.
Song, B., Zeng, G., Gong, J., Liang, J., Xu, P., Liu, Z., et. al. (2017). Evaluation methods for assessing effectiveness of in situ remediation of soil and sediment contaminated with organic pollutants and heavy metals. Environment International, 105, 43-55.
Tessier, A., Campbell, P. G., & Bisson, M. (1979). Sequential extraction procedure for the speciation of particulate trace metals. Analytical chemistry, 51(7), 844-851.
Thorslund, J., Jarsjö, J., Wällstedt, T., Mörth, C. M., Lychagin, M. Y., & Chalov, S. R. (2016). Speciation and hydrological transport of metals in non-acidic river systems of the Lake Baikal basin: field data and model predictions. Regional Environmental Change, 1-15.
Tomlinson, D. L., Wilson, J. G., Harris, C. R., & Jeffrey, D. W. (1980). Problems in the assessment of heavy-metal levels in estuaries and the formation of a pollution index. Helgoländer Meeresuntersuchungen, 33(1), 566.
Turekian, K. K., & Wedepohl, K. H. (1961). Distribution of the elements in some major units of the earth's crust. Geological Society of America Bulletin, 72(2), 175-192.
USEPA. (1999). U.S. Environmental Protection Agency, Screening level ecological risk assessment protocol for hazardous waste combustion facilities, vol. 3, Appendix E: Toxicity reference values. EPA 530-D99-001C.
Verbrugge, B. (2017). Small-scale gold mining and the state in the Philippines. In Contested Extractivism, Society and the State (pp. 101-125). Palgrave Macmillan UK.
Zhang, C., Yu, Z. G., Zeng, G. M., Jiang, M., Yang, Z. Z., Cui, F., ... & Hu, L. (2014). Effects of sediment geochemical properties on heavy metal bioavailability. Environment international, 73, 270-281.
Zhang, J., & Liu, C. L. (2002). Riverine composition and estuarine geochemistry of particulate metals in China—weathering features, anthropogenic impact and chemical fluxes. Estuarine, Coastal and Shelf Science, 54(6), 1051-1070.
Zhao, Y., & Marriott, S. B. (2013). Dispersion and remobilisation of heavy metals in the River Severn system, UK. Procedia Environmental Sciences, 18, 167-173.