What is qualitative analysis? Qualitative analysis is when one measures the quality of a sample rather then its quantity. Qualitative chemical analysis helps us identify an element or grouping of elements present in a sample. It is an analysis that identifies elements, substances, ions and compounds of a sample and there are many different ways to identify the ions found in a substance using qualitative analysis. Three examples are the flame test, looking at the colour of the solution, and looking at the formation of a precipitate.
The first qualitative analysis to identify ions is the flame test. The flame test is a qualitative analysis that allows us to identify different metal ions in a solution. When metal ions are heated in a flame, they turn a unique colour, and when examining the colour of the flame, one can try to identify the ions present in the solution. For example, when lithium ions are heated they turn crimson red, but when potassium ions are heated they turn lavender. One problem with flame tests is that they are very sensitive, so when conducting an experiment, it is advised to only use tiny samples to increase the test’s accuracy. An extremely useful tool when conducting flame tests is the Bunsen burner. The Bunsen burner was named for Robert Wilhelm Eberhard Bunsen (1811-1899), a German chemist who contributed to its invention only in a minor way. The Bunsen burner produces a clean, hot flame and is used along with a wire loop (usually platinum or an alloy of nickel and chromium) to perform flame tests. When using aqueous solutions, one must simply dip the wire into the solution and then place it into the flame. When using solid solutions, one must first combine the solution with hydrochloric acid or nitric acid,...
... middle of paper ...
... standards that address the parameters that affect the consumer’s acceptance of drinking water, such as taste, odour and colour, but they are not health hazards. An example of aesthetic objectives is that only 250 mg/L of chloride, which is used for water treatment, can be used.
Drinking water is essential to life, yet it is naturally exposed to pathogens and chemical, physical and radiological contaminants. These organisms can affect human health, both in the short-term and the long-term, and are known to contribute to a large range of adverse health effects including cancer, neurological disorders, reproductive problems, the disruption of the endocrine system, and gastrointestinal illnesses. For these reasons, it is important that standards and guidelines are set to protect the human population. Standards ensure that our water is safe, clean, tasty and healthy.
Qualitative data analysis requires a logical approach in order to interpolate data into useful information. Participants, and any further obtainable data that will shed light on the studied phenomenon should base the analysis on the objectives of the study, and the response.
Drinking water is one of our basic needs in order to survive, therefore the water that we drink and cook with must be of a high quality, and filtered of any harmful contaminants.
No matter what, where, or who you are, water is a necessary component to keeping any organism alive. Although water is essential for life, in many places, clean drinking water is hard to find. There are many consequences to drinking contaminated water. Every year, three to five million people are attacked by water-borne diseases and over 100,000 of them die. One fatal disease that can kill within hours is cholera.
It is very common for research groups to set up a "bottled water taste test". The results are always the same: without a label, there is no obvious difference among any kind of bottled water or even tap water. Yet millions of Americans routinely buy bottled water and re-filter their tap water. The Clean Water Act of 1972 was supposed to ensure all water sources were pure and safe for drinking or swimming. Enforcement simply did not go far enough, and public information on contaminants grew much faster than purification programs did. A series of laws followed the 1972 Act in an attempt to stem the general aversion to tap water, including the 1974 and 1996 Safe Drinking Water Acts (SDWA). These laws are a step in the right direction, but bottled water still maintains an advantage founded not in superior quality but in more effective marketing.
Water is essential in our everyday life. Water is one of the most important substances on earth. All plants and animals utilize water to survive. Therefore it is vital that there be clean water for our communities to utilize to survive as a whole. Unfortunately because of different determinants our source of water are not always safe to use. We happen to have to deal with contamination of drinking water. Contamination of fresh water used for household needs, including pollution of oceans, rivers, lakes and reservoirs. There are categories of the different contaminants that exist such as Physical contaminants, Chemical contaminants, Biological contaminants, and radiological contaminants ("Types of Drinking Water Contaminants | Drinking Water
Qualitative research is a method of inquiry appropriated in many different academic disciplines, traditionally in the social sciences, but also in market research and further contexts (Denzin, Norman, Lincoln & Yvonna . 2005).
Scientific report on cations and anions How can we work out the unknown solutions by completing a flame test and a precipitate test? In this experiment we will work out two different unknown solutions using a flame test and a precipitate test. A flame test is a procedure you use in chemistry, predominantly with a Bunsen burner, to detect certain elements, based on their emission of colour that they give off.
It’s no mystery that having clean water is a fundamental element to living in a prosperous society and one of the few things essential for human survival. Water not only sustains our health, but is required in making everything from electronics to clothes. Clean water may seem as ordinary as putting on your shoes, but it’s a daily party of our life that’s being threatened.
This is because only a small part of the population, particularly in developing countries, have access to water of acceptable quality. It is estimated that in some countries only 20% of the rural population has water of satisfactory quality. Based on these statistics, it is clear the urgent need for awareness about caring for water use. Almost without realizing it, we are seriously jeopardizing this essential resource, not for us but for our children's children and their generations, aware that in other parts o...
Clean water is needed for good human and animal health, but as DoSomething.org states, over 1 billion people worldwide don’t have a means of getting clean drinking water, an...
Having clean water to drink means that water must have microbial, chemical and physical characteristics that meet WHO guidelines or national standards on drinking water quality. Around 780 million people in the world don’t have access to clean drinking water (Millions Lack Safe Water). More than 3.4 million people die each year from water, sanitation, and hygiene-related causes. Nearly all deaths, 99 percent, occur in developing countries. Around the world, diseases in unclean water kill about 1,400 children every day (Clean Drinking Water). There are many organizations that raise money in order to help develop ways or create ways for people to obtain clean drinking water. However, many people are unaware that this is even a problem in other countries because we take clean water for granted.
The consumption of contaminated water can be dangerous for health reasons and several people have passed away from these water-borne diseases. Some of these diseases include Cholera, Typhoid, Dysentery, Giardiasis, and Malaria. These unfortunate diseases are currently the cause of numerous deaths, especially in small children. The availability of clean water can prevent many problems in low-income communities. The available resources for clean water are very rare, so these water sources need to pass through a process of water sanitation in order to just be sustainable to drink, “The world’s surface is made up of approximately 80% water, which is an indestructible substance.
Qualitative and quantitative research methods take different approaches to gathering and analysing information. Whether it is a qualitative or quantitative study, the research study begins with a question or series of questions. Both use rigorously designed studies to get the most accurate, detailed and complete results. Qualitative studies common methods are interviews, surveys and observation. A qualitative study aims to provide a detailed description of the study results, often using pictures and written descriptions to describe what the research revealed. A qualitative study looks at the big picture, helping researchers to narrow in on points of interest that then can be followed up on in a quantitative study. While a quantitative study has a narrower focus, it attempts to provide a detailed explanation of the study focus, along with this using numbers and statistics. And the results from a quantitative study can reveal bigger questions that call for qualitative study. Or vice versa a qualitative study may reveal at analysis that a more focus and direct approach may be needed. With both methods analysis is a key part of any study whether qualitative or quantitative.
The parameters of water quality are determined by how the water is going to be used. “Most of the parameters affirmed are focused on treating it for human consumption, industrial use and environment. The main water quality parameters that are measured in natural water are
Water plays such an important role in our daily lives. 70% of our body is composed of water. 70% of the earth surface is also made up of water, but out of the 70%, only 1/3 of water is consumable. In fact, this amount has been continuously to decrease as more and more industries began to pollute and damage the water. For example, many toxic chemicals may be released into the water thus making the water impure. Such pollutions and damages lead the water to be contaminated and inconsumable as it may cause severe diseases. Water purification can remove all the unnecessary bacteria and viruses from the water that is hazardous for our health. Water purification may also improve the flavor and appearance of water. It removes the unpleasant odor. Therefore, water purification became one of the most useful and popular process used by people all over the world today. It is by far the most recommended and safest water treatment that is commonly used to purify damaged water into consumable water. Water purification provides us with safe, pure and clean water to consume and use.