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What epa is doing.
Learn what EPA is doing to address PFAS.
PFAS are a group of manufactured chemicals that have been used in industry and consumer products since the 1940s because of their useful properties. There are thousands of different PFAS, some of which have been more widely used and studied than others.
Perfluorooctanoic Acid (PFOA) and Perfluorooctane Sulfonate (PFOS), for example, are two of the most widely used and studied chemicals in the PFAS group. PFOA and PFOS have been replaced in the United States with other PFAS in recent years.
One common characteristic of concern of PFAS is that many break down very slowly and can build up in people, animals, and the environment over time.
PFAS can be present in our water, soil, air, and food as well as in materials found in our homes or workplaces, including:
Due to their widespread production and use, as well as their ability to move and persist in the environment, surveys conducted by the Centers for Disease Control and Prevention (CDC) show that most people in the United States have been exposed to some PFAS. Most known exposures are relatively low, but some can be high, particularly when people are exposed to a concentrated source over long periods of time. Some PFAS chemicals can accumulate in the body over time.
Current research has shown that people can be exposed to PFAS by:
Current scientific research suggests that exposure to certain PFAS may lead to adverse health outcomes. However, research is still ongoing to determine how different levels of exposure to different PFAS can lead to a variety of health effects. Research is also underway to better understand the health effects associated with low levels of exposure to PFAS over long periods of time, especially in children.
Current peer-reviewed scientific studies have shown that exposure to certain levels of PFAS may lead to:
Scientists at EPA, in other federal agencies, and in academia and industry are continuing to conduct and review the growing body of research about PFAS. However, health effects associated with exposure to PFAS are difficult to specify for many reasons, such as:
Some people have higher exposures to PFAS than others because of their occupations or where they live. For example:
Because children are still developing, they may be more sensitive to the harmful effects of chemicals such as PFAS. They can also be exposed more than adults because:
Breast milk from mothers with PFAS in their blood and formula made with water containing PFAS can expose infants to PFAS, and it may also be possible for children to be exposed in utero during pregnancy. Scientists continue to do research in this area. Based on current science, the benefits of breastfeeding appear to outweigh the risks for infants exposed to PFAS in breast milk . To weigh the risks and benefits of breastfeeding, mothers should contact their doctors.
News releases from epa about pfas.
Sign up to receive EPA’s press releases and alerts on PFAS related topics.
What is a regulation.
Under federal environmental laws, EPA and other federal agencies are authorized to help put those laws into effect by creating and enforcing regulations.
Regulations are mandatory requirements that can apply to individuals, businesses, state or local governments, non-profits, and others.
Federal agencies are required to provide an opportunity for public comment when proposing a new regulation and must consider the comments in revising the proposal and issuing a final rule. In carrying out our mission to protect human health and the environment, EPA develops regulations to prevent or to clean up hazardous chemicals released into our air, land, and water, some of which relate to PFAS.
Commenting on a proposed regulation is an important opportunity to make your voice heard. It is a way for you to provide decisionmakers with key information on any or all aspects of the proposed action, including:
EPA’s regulations will always be announced in the Federal Register and can be found at the following government websites: https://www.federalregister.gov/ , and https://www.regulations.gov/ .
For some rules, EPA holds a public hearing where you can provide comments in person or remotely. The agency always accepts comments in writing. All comments – whether in person or written – get the same level of consideration. Below are additional resources to help you comment on EPA’s proposed regulations related to PFAS.
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Thesis. Thesis is a type of research report. A thesis is a long-form research document that presents the findings and conclusions of an original research study conducted by a student as part of a graduate or postgraduate program. It is typically written by a student pursuing a higher degree, such as a Master's or Doctoral degree, although it ...
Definition: Research Paper is a written document that presents the author's original research, analysis, and interpretation of a specific topic or issue. It is typically based on Empirical Evidence, and may involve qualitative or quantitative research methods, or a combination of both. The purpose of a research paper is to contribute new ...
There are five MAJOR parts of a Research Report: 1. Introduction 2. Review of Literature 3. Methods 4. Results 5. Discussion. As a general guide, the Introduction, Review of Literature, and Methods should be about 1/3 of your paper, Discussion 1/3, then Results 1/3. Section 1: Cover Sheet (APA format cover sheet) optional, if required.
A research report is a collection of contextual data, gathered through organized research, that provides new insights into a particular challenge (which, for this article, is business-related). Research reports are a time-tested method for distilling large amounts of data into a narrow band of focus. Their effectiveness often hinges on whether ...
An outline of the research questions and hypotheses; the assumptions or propositions that your research will test. Literature Review. Not all research reports have a separate literature review section. In shorter research reports, the review is usually part of the Introduction. A literature review is a critical survey of recent relevant ...
A research report is a well-crafted document that outlines the processes, data, and findings of a systematic investigation. It is an important document that serves as a first-hand account of the research process, and it is typically considered an objective and accurate source of information.
1. The Title. The title should be specific and indicate the theme of the research and what ideas it addresses. Use keywords that help explain your paper's topic to the reader. Try to avoid abbreviations and jargon. Think about keywords that people would use to search for your paper and include them in your title. 2.
Create a research paper outline. Write a first draft of the research paper. Write the introduction. Write a compelling body of text. Write the conclusion. The second draft. The revision process. Research paper checklist. Free lecture slides.
Abstract. This guide for writers of research reports consists of practical suggestions for writing a report that is clear, concise, readable, and understandable. It includes suggestions for terminology and notation and for writing each section of the report—introduction, method, results, and discussion. Much of the guide consists of ...
A well-structured research paper not only helps readers follow the flow of ideas but also enhances the clarity and coherence of the content. By organizing information into sections, paragraphs, and sentences, researchers can present their thoughts logically and systematically. This logical organization allows readers to easily connect ideas ...
Here's a breakdown of some common types of research papers: Analytical Papers. Focus: Dissect a complex subject, text, or phenomenon to understand its parts, implications, or underlying meanings. Structure: Emphasizes a clear thesis statement, systematic analysis, and in-depth exploration of different perspectives.
Use the section headings (outlined above) to assist with your rough plan. Write a thesis statement that clarifies the overall purpose of your report. Jot down anything you already know about the topic in the relevant sections. 3 Do the Research. Steps 1 and 2 will guide your research for this report.
What are the implications of the findings? The research report contains four main areas: Introduction - What is the issue? What is known? What is not known? What are you trying to find out? This sections ends with the purpose and specific aims of the study. Methods - The recipe for the study. If someone wanted to perform the same study ...
A complete research paper in APA style that is reporting on experimental research will typically contain a Title page, Abstract, Introduction, Methods, Results, Discussion, and References sections. 1 Many will also contain Figures and Tables and some will have an Appendix or Appendices. These sections are detailed as follows (for a more in ...
Research reports are recorded data prepared by researchers or statisticians after analyzing the information gathered by conducting organized research, typically in the form of surveys or qualitative methods. A research report is a reliable source to recount details about a conducted research. It is most often considered to be a true testimony ...
It describes the essence, the main theme of the paper. It includes the research question posed, its significance, the methodology, and the main results or findings. Footnotes or cited works are never listed in an abstract. Remember to take great care in composing the abstract. It's the first part of the paper the instructor reads.
II. Abstract: "Structured abstract" has become the standard for research papers (introduction, objective, methods, results and conclusions), while reviews, case reports and other articles have non-structured abstracts. The abstract should be a summary/synopsis of the paper. III. Introduction: The "why did you do the study"; setting the ...
The basic structure of a typical research paper includes Introduction, Methods, Results, and Discussion. Each section addresses a different objective. what they think the results mean in Discussion. A substantial study will sometimes include a literature review section which discusses previous works on the topic.
In this blog, we explain the basic structure of a research paper and explain its various components. We elaborate on various parts and sections of a research paper. We also provide guidance to produce a research paper structure for your work through word cloud diagrams that illustrate various topics and sub-topics to be included under each section.
The basic parts to a research paper are the introduction, method, results, discussion, and conclusion. However, a research paper can include other parts like the abstract, discussion, and reference list. Although a student can be writing on a single topic, each part of research paper requires specific information. That's why different ...
INTRODUCTION. Creativity and critical thinking are of particular importance in scientific research. Basically, research is original investigation undertaken to gain knowledge and understand concepts in major subject areas of specialization, and includes the generation of ideas and information leading to new or substantially improved scientific insights with relevance to the needs of society.
Finally, the conclusion restates the paper's thesis and should explain what you have learned, giving a wrap up of your main ideas. 1. The Title The title should be specific and indicate the theme of the research and what ideas it addresses. Use keywords that help explain your paper's topic to the reader. Try to avoid abbreviations and jargon.
Report Writing Definition. Report writing is the process of organizing and presenting information in a clear, concise, and objective manner for a specific audience. It involves gathering data, analyzing it, and presenting it in a format that is easy to understand and relevant to the topic at hand. - The University of Wisconsin Writing Center.
The Online Writing Lab (the Purdue OWL) at Purdue University houses writing resources and instructional material, and we provide these as a free service at Purdue.
What is a Research Design? A research design is defined as the overall plan or structure that guides the process of conducting research. It is a critical component of the research process and serves as a blueprint for how a study will be carried out, including the methods and techniques that will be used to collect and analyze data.
However, research is still ongoing to determine how different levels of exposure to different PFAS can lead to a variety of health effects. Research is also underway to better understand the health effects associated with low levels of exposure to PFAS over long periods of time, especially in children. What We Know about Health Effects