2021 Advanced Material Cycle Analysis

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Academic unit or major
Graduate major in Chemical Science and Engineering
Toyoda Sakae  Yamada Keita 
Course component(s)
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Course description and aims

[Summary of the lecture] This course explains methodology of decoding origins and histories of environmental materials using abundance and variation of their isotopic substitutes. This course explains material cycle analyses using isotope mixing and fractionation processes and their application to environmental materials.
[Aim of the lecture]The purpose of this course is to understand the concepts of isotopic analysis for decoding origins and histories of environmental materials.

Student learning outcomes

By the end of this course, students will be able to:
(1) Explain the principle and practice about material analyses of environmental substances using their isotopic substitutes on light element.
(2) Determine deductively the precursors, source, sink, mixing, transport and diffusion of environmental substances by the observation of spatio-temporal distributions of their isotopic substitutes.


material cycles, isotopic substitutes

Competencies that will be developed

Specialist skills Intercultural skills Communication skills Critical thinking skills Practical and/or problem-solving skills

Class flow

At the end of each class, students are given exercise problems related to the lecture given that day to solve.
Students must familiarize themselves using course materials provided before coming to class.
In the lecture which treats calculations, students should bring their own PC to make calculations using spread-sheet software.

Course schedule/Required learning

  Course schedule Required learning
Class 1 Basis of material cycle analysis using isotopes Understand the basis of material cycle analysis using isotopes
Class 2 Calculations of isotope analysis1: Mixing process Explain the calculation of mixing process for isotopic analysis
Class 3 Calculations of isotope analysis1: Fractionation process Explain the calculation of fractionation process for isotopic analysis
Class 4 Isotope modeling: Application to oxygen and nitrogen cycle analyses Explain isotope modeling
Class 5 Carbon cycles analysis using isotopes: Global carbon cycles Explain carbon cycles on the surface environments of the Earth using isotopic analysis
Class 6 Carbon cycles analysis using isotopes: Food chemistry, metabolite analysis Explain how isotopic analysis is applied for Food chemistry and metabolite analysis
Class 7 term-end exam Explain how isotopic analysis is applied for paleoenvironmental reconstruction

Out-of-Class Study Time (Preparation and Review)

To enhance effective learning, students are encouraged to spend approximately 100 minutes preparing for class and another 100 minutes reviewing class content afterwards (including assignments) for each class.
They should do so by referring to textbooks and other course material.


None required

Reference books, course materials, etc.

Course materials are provided before class.

Assessment criteria and methods

Students’ course scores are based on final exams (50%) and exercise problems (50%) that requires specialty.

Related courses

  • CAP.I405 : Environmental Chemistry
  • CAP.I419 : Analytical Techniques for Environmental Chemistry
  • CAP.I435 : Advanced Geochemistry

Prerequisites (i.e., required knowledge, skills, courses, etc.)

Students must have successfully completed Advanced Geochemistry (CAP.I435.E).

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