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Environmental Health and Medicine Education

Tables and Figures

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Tables and Figures

Figures

Figure 1. Structures of Nitrate and Nitrite Ions

Figure 2. The Nitrogen Cycle

Figure 3. Schematic diagram of the physiologic disposition of nitrate, nitrite, and nitric oxide (NO) from exogenous (dietary) and endogenous sources.

Figure 4. Oxy-Hemoglobin Dissociation Curve

Figure 5. Fetal Hemoglobin Saturation Curve

Figure 6. Methylene Blue Pathway, Pharmacodynamics

Tables

Table 1. Nitrate Content of Selected Vegetables

Table 2. Reported Inducers of Methemoglobinemia

Table 3. Signs and Symptoms of Methemoglobinemia

Table 4. Suggested Lab Tests for Methemoglobinemia Workup

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Last Reviewed: May 24, 2023
Source: Agency for Toxic Substances and Disease Registry
homeNitrate/Nitrite Toxicity
  • Cover Page
  • Table of Contents
  • How to Use This Course
  • Initial Check
  • What Are Nitrates and Nitrites?
  • Where Are Nitrates and Nitrites Found?
  • Routes of Exposure to Nitrates and Nitrites
  • Who Is at Most Risk
  • U.S. Standards and Regulations
  • Biologic Fate of Nitrates and Nitrites
  • What Are the Health Effects from Exposure
  • Clinical Assessment – Evaluation
  • Clinical Assessment – Laboratory Tests
  • How Should Patients Be Treated and Managed?
  • What Instructions Should Be Given to Patients?
  • Sources of Additional Information
  • Literature Cited
  • Tables and Figures
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