Competitive Sorption between Oxalate and Phosphate in Soil: An Environmental Chemistry Laboratory Using Ion Chromatography

Xia, Kang; Pierzynski, Gary M.

doi:10.1021/ed080p71

Cited by 8 publications

(8 citation statements)

References 13 publications

(14 reference statements)

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“…Quantities of P, in the water collected at the bottom of the columns, were plotted as a function of the irrigation water. Similar profiles were obtained for both 100 mg and 400 mg quantities of unencapsulated P, and total leaching P loss is under 100%, which is consistent with P-fixation capacity of soil (2,7). Results of 400-mg unencapsulated P are shown in Figure 2.…”

Section: Soil-water Release Of Unencapsulated Psupporting

confidence: 79%

Reducing the Use of Agrochemicals: A Simple Experiment

2006

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This article describes a simple laboratory project to introduce students to nonpoint source pollution, which may interest undergraduate and graduate students of environmental or agricultural chemistry courses. Students become aware that dissemination of nutrients and pesticides is prone to surface runoff and groundwater leaching, causing damage to neighboring land. To demonstrate dissemination of such pollutants, we examine inorganic phosphorus as example of a common agrochemical. Students follow the movement of inorganic P into the groundwater. Gelatin gels containing inorganic P are prepared to obtain a continuous release of inorganic P with a controlled rate. The slow release of P allows fewer applications and less agrichemicals are needed, helping to prevent leaching with consequent reduction of groundwater contamination. Students compare the advantages of slow-release inorganic P versus its application by conventional methods.

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Section: Soil-water Release Of Unencapsulated Psupporting

confidence: 79%

Reducing the Use of Agrochemicals: A Simple Experiment

2006

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“…First and foremost, to our knowledge, it is the first laboratory experiment for undergraduate students to quantify microplastic (with an emphasis on microfibers) pollution in soil samples. Environmental concerns are of major importance to many students, and although there are many published environmental chemistry laboratory experiments, some of which deal with plastics, there are none that allow students to quantify microplastics pollution in their environment. − Second, this laboratory experiment incorporates several key topics (pH, solution concentration calculations, etc.) learned in virtually any nonmajors’ or majors’ chemistry course within a single laboratory experiment.…”

Section: Introductionmentioning

confidence: 99%

Detecting Microplastics in Soil and Sediment in an Undergraduate Environmental Chemistry Laboratory Experiment That Promotes Skill Building and Encourages Environmental Awareness

et al. 2018

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Environmental pollution is both a worldwide and a local issue, and microplastic pollution in particular is receiving increased attention due to its prevalence and bioaccumulation potential affecting the food chain. This laboratory experiment uses current, research-based methods such that the students can determine the extent of microplastic pollution in local soil samples. This laboratory experiment can be used as either a 2 or 3 week mini-research-project for first-year undergraduate students in either an introductory chemistry course for nonmajors or a general chemistry course for majors. The laboratory experiment gives students exposure to sieving, density gradients, and exposure to the Fenton reagent to isolate microplastics from soil samples, which are then analyzed and quantified under stereomicroscope magnification. Several general chemistry topics common to most first-year chemistry courses (density and solution concentration calculations, etc.) are emphasized during the laboratory experiment. From postexperiment assessments, students showed a marked improvement in select skill sets and knowledge of the microplastic pollution problem, and some students recognized their misconceptions concerning research following the completion of this laboratory experiment.

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“…The time which is spent on phosphate and the element phosphorus is generally not high in most high school or undergraduate chemistry curricula. Nevertheless, there have been suggestions for teaching about phosphates, such as detecting and quantifying phosphate in cola, investigating the competitive sorption of oxalate and phosphate in soil using chromatography, using ion-exchange resins for measuring phosphate, and detailing its former use in detergents . An important field when it comes to the chemistry of phosphates concerns environmental issues in connection with analyzing water samples from lakes or rivers.…”

Section: Teaching Chemistry On Phosphatesmentioning

confidence: 99%

Phosphate Recovery as a Topic for Practical and Interdisciplinary Chemistry Learning

et al. 2019

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Phosphates are essential components of any efficient fertilizer. Natural phosphate rock is, however, not available in every part of the world. According to the European Commission, phosphate rock has high economic importance as well as a certain supply riskat least for Europe. For these reasons, environmental technology research has received a great attention from the stakeholders that provided support in developing processes for recovering phosphate from wastewater and sewage sludge to help to close the phosphate cycle and reduce potential risks, including eutrophication and its influence on the environment. In this paper, we present a design case study of integrating the idea of phosphate recovery into chemistry education via a nonformal learning experience for high school students in Germany. The paper discusses a series of experiments and shows how they were embedded through interdisciplinary curriculum development.

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Competitive Sorption between Oxalate and Phosphate in Soil: An Environmental Chemistry Laboratory Using Ion Chromatography

Cited by 8 publications

References 13 publications

Reducing the Use of Agrochemicals: A Simple Experiment

Reducing the Use of Agrochemicals: A Simple Experiment

Detecting Microplastics in Soil and Sediment in an Undergraduate Environmental Chemistry Laboratory Experiment That Promotes Skill Building and Encourages Environmental Awareness

Phosphate Recovery as a Topic for Practical and Interdisciplinary Chemistry Learning

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