1) The document discusses the composition of air and various methods to analyze its components, such as the copper oxide method to verify nitrogen content.
2) It also covers topics like the liquefaction process of air using fractional distillation to separate components by boiling point.
3) Additionally, it summarizes several primary air pollutants like carbon monoxide, methane, nitrogen oxides, ozone, and sulfur dioxide; their sources and health effects; and some remedies for air pollution control.
more chemistry contents are available
1. pdf file on Termmate: https://www.termmate.com/rabia.aziz
2. YouTube: https://www.youtube.com/channel/UCKxWnNdskGHnZFS0h1QRTEA
3. Facebook: https://web.facebook.com/Chemist.Rabia.Aziz/
4. Blogger: https://chemistry-academy.blogspot.com/
Atmospheric particulate matter, Sources Of Particulate Matter
Industrial Sources of Particulate Emissions
Types Of Particulate Matter
Important Terms Describing Atmospheric Particles
Particulate Matter And Health
General Methods For Control Of Particulate Emissions
Particulate Collection Mechanism
I hope You all like it. I hope It is very beneficial for you all. I really thought that you all get enough knowledge from this presentation. This presentation is about materials and their classifications. After you read this presentation you knowledge is not as before.
more chemistry contents are available
1. pdf file on Termmate: https://www.termmate.com/rabia.aziz
2. YouTube: https://www.youtube.com/channel/UCKxWnNdskGHnZFS0h1QRTEA
3. Facebook: https://web.facebook.com/Chemist.Rabia.Aziz/
4. Blogger: https://chemistry-academy.blogspot.com/
Atmospheric particulate matter, Sources Of Particulate Matter
Industrial Sources of Particulate Emissions
Types Of Particulate Matter
Important Terms Describing Atmospheric Particles
Particulate Matter And Health
General Methods For Control Of Particulate Emissions
Particulate Collection Mechanism
I hope You all like it. I hope It is very beneficial for you all. I really thought that you all get enough knowledge from this presentation. This presentation is about materials and their classifications. After you read this presentation you knowledge is not as before.
The branch of chemistry which deals with chemicals and other pollutants in environment
This presentation includes atmospheric pollution, water pollution, waste water treatment method and green chemistry.
It will guide to about the air sampling process which is essential step before you proceed for any type of research regarding air pollution, pollutants and health effects.
Indoor air quality (IAQ) is a term which refers to the air quality within and around buildings and structures, especially as it relates to the health and comfort of building occupants.
HSSC Second year Chemistry course slides for Federal Board Pakistan, lectures by Dr. Raja Hashim Ali (also available on Youtube as a series of video lectures).
The branch of chemistry which deals with chemicals and other pollutants in environment
This presentation includes atmospheric pollution, water pollution, waste water treatment method and green chemistry.
It will guide to about the air sampling process which is essential step before you proceed for any type of research regarding air pollution, pollutants and health effects.
Indoor air quality (IAQ) is a term which refers to the air quality within and around buildings and structures, especially as it relates to the health and comfort of building occupants.
HSSC Second year Chemistry course slides for Federal Board Pakistan, lectures by Dr. Raja Hashim Ali (also available on Youtube as a series of video lectures).
Environmental impact of thermal power plantSiraskarCom
Environmental impact of thermal power plant, Different pollutants from thermal power plants, their effects on human health and vegetation, methods to control pollutants such as particulate matter; oxides of sulphur; oxides of nitrogen, dust handling systems, ESP, scrubbers, water pollution, thermal pollution, noise pollution from TPP and its control
GCSE Chemistry Revision - Air and Air PollutionKatie B
This is a quick summary of the GCSE Chemistry topic around the atmosphere and air pollution. It includes topics on acid rain, nitrogen oxides, global warming and car pollution. I have used the Letts GCSE in a Week book for most of this presentation.
What does hydrogen gas mean?
Medical Definition of hydrogen
: a nonmetallic element that is the simplest and lightest of the elements and that is normally a colorless odorless highly flammable diatomic gas —symbol H — see deuterium, tritium.
Hydrogen gas is sometimes used directly to create an acid. For example, it is used in the creation of hydrochloric acid: H2 + Cl2 → 2HCl. Hydrogen gas is used in the processing of petroleum products to break down crude oil into fuel oil, gasoline, and such.
Instructions for Submissions thorugh G- Classroom.pptxJheel Barad
This presentation provides a briefing on how to upload submissions and documents in Google Classroom. It was prepared as part of an orientation for new Sainik School in-service teacher trainees. As a training officer, my goal is to ensure that you are comfortable and proficient with this essential tool for managing assignments and fostering student engagement.
The Roman Empire A Historical Colossus.pdfkaushalkr1407
The Roman Empire, a vast and enduring power, stands as one of history's most remarkable civilizations, leaving an indelible imprint on the world. It emerged from the Roman Republic, transitioning into an imperial powerhouse under the leadership of Augustus Caesar in 27 BCE. This transformation marked the beginning of an era defined by unprecedented territorial expansion, architectural marvels, and profound cultural influence.
The empire's roots lie in the city of Rome, founded, according to legend, by Romulus in 753 BCE. Over centuries, Rome evolved from a small settlement to a formidable republic, characterized by a complex political system with elected officials and checks on power. However, internal strife, class conflicts, and military ambitions paved the way for the end of the Republic. Julius Caesar’s dictatorship and subsequent assassination in 44 BCE created a power vacuum, leading to a civil war. Octavian, later Augustus, emerged victorious, heralding the Roman Empire’s birth.
Under Augustus, the empire experienced the Pax Romana, a 200-year period of relative peace and stability. Augustus reformed the military, established efficient administrative systems, and initiated grand construction projects. The empire's borders expanded, encompassing territories from Britain to Egypt and from Spain to the Euphrates. Roman legions, renowned for their discipline and engineering prowess, secured and maintained these vast territories, building roads, fortifications, and cities that facilitated control and integration.
The Roman Empire’s society was hierarchical, with a rigid class system. At the top were the patricians, wealthy elites who held significant political power. Below them were the plebeians, free citizens with limited political influence, and the vast numbers of slaves who formed the backbone of the economy. The family unit was central, governed by the paterfamilias, the male head who held absolute authority.
Culturally, the Romans were eclectic, absorbing and adapting elements from the civilizations they encountered, particularly the Greeks. Roman art, literature, and philosophy reflected this synthesis, creating a rich cultural tapestry. Latin, the Roman language, became the lingua franca of the Western world, influencing numerous modern languages.
Roman architecture and engineering achievements were monumental. They perfected the arch, vault, and dome, constructing enduring structures like the Colosseum, Pantheon, and aqueducts. These engineering marvels not only showcased Roman ingenuity but also served practical purposes, from public entertainment to water supply.
Embracing GenAI - A Strategic ImperativePeter Windle
Artificial Intelligence (AI) technologies such as Generative AI, Image Generators and Large Language Models have had a dramatic impact on teaching, learning and assessment over the past 18 months. The most immediate threat AI posed was to Academic Integrity with Higher Education Institutes (HEIs) focusing their efforts on combating the use of GenAI in assessment. Guidelines were developed for staff and students, policies put in place too. Innovative educators have forged paths in the use of Generative AI for teaching, learning and assessments leading to pockets of transformation springing up across HEIs, often with little or no top-down guidance, support or direction.
This Gasta posits a strategic approach to integrating AI into HEIs to prepare staff, students and the curriculum for an evolving world and workplace. We will highlight the advantages of working with these technologies beyond the realm of teaching, learning and assessment by considering prompt engineering skills, industry impact, curriculum changes, and the need for staff upskilling. In contrast, not engaging strategically with Generative AI poses risks, including falling behind peers, missed opportunities and failing to ensure our graduates remain employable. The rapid evolution of AI technologies necessitates a proactive and strategic approach if we are to remain relevant.
Macroeconomics- Movie Location
This will be used as part of your Personal Professional Portfolio once graded.
Objective:
Prepare a presentation or a paper using research, basic comparative analysis, data organization and application of economic information. You will make an informed assessment of an economic climate outside of the United States to accomplish an entertainment industry objective.
Biological screening of herbal drugs: Introduction and Need for
Phyto-Pharmacological Screening, New Strategies for evaluating
Natural Products, In vitro evaluation techniques for Antioxidants, Antimicrobial and Anticancer drugs. In vivo evaluation techniques
for Anti-inflammatory, Antiulcer, Anticancer, Wound healing, Antidiabetic, Hepatoprotective, Cardio protective, Diuretics and
Antifertility, Toxicity studies as per OECD guidelines
4. VERIFYING COMPOSITION OF AIR:
PROCEDURE
100 cm3 of dry air (air is dried by passing over
anhydrous calcium chloride) filled in a graduated
gas syringe
This air is passed back-and-forth over heated
copper using two syringes, attached on each side
of a hard glass (silica) tube (containing copper)
On culmination of the experiment, 79 cm3 of dry gas
remains, indicating that 21 cm3 has been used by
copper
On analysis, the remaining gas is found to be
mainly nitrogen and pink copper metal turns to
black copper (II) oxide
5. LIQUEFACTION OF AIR
Air is mainly comprised to two diatomic
gases, namely nitrogen, N2, and oxygen O2
By principle, the liquefaction point of air should lie
between those of pure N2 (77K) and pure O2
(90.6K)
The liquefaction process begins at 81.6K (9K below
the liquefaction point of O2) and completes at 79K
(2K above the liquefaction point of N2), at one
atmospheric pressure
Industrially, however, 200 atm. is used, so
aforementioned conditions do not necessarily
apply
8. FRACTIONAL DISTILLATION OF LIQUID AIR
Pale blue liquid air passed
in a fractionating column
heat
Nitrogen starts to boil off
first, at 77K
87K
Argon boils off, at 87K
then
Oxygen boils off, at 90K
9. BOILING POINTS OF COMPONENTS OF AIR
Gas
Boiling Point/K
Xenon
165
Krypton
121
Oxygen
90
Argon
87
Nitrogen
77
Neon
27
Helium
4
11. CARBON CYCLE
Earth’s crust contains carbon compounds
(carbonates, fuels)
Atmosphere contains carbon in form of carbon
dioxide, mainly released by respiration:
C6H12O6 + 6O2
6CO2 + 6H2O (ΔH = -ve)
Also released when fuels combust:
C + O2
CO2
CO2 used by plants to manufacture sugars, in
photosynthesis:
6CO2 + 6H2O
C6H12O6 + 6O2 (ΔH = +ve)
Decomposition and fossilization return carbon
compounds of living things to soil
13. CARBON MONOXIDE
Naturally produced by photochemical reactions in
the troposphere (5×1012 kg/year), during
breakdown of haemoglobin and in fires
Also produced due to incomplete combustion of
hydrocarbons
Greenhouse gas
Toxic gas, which is the main source of air poisoning
in most countries
headache, nausea, vomiting, dizziness, fatigue
disorientation, visual disturbance, syncope and seizures
14. METHANE
Produced naturally in rice paddies, decomposition
of biological matter, digestion, coalmines, sea beds
(methane hydrates)
Main constituent of natural gas
If CH4 > O2 in blood, displacement can occur (but
rarely), leading to slight emotional, psychological
distress, and fatigue
Non-carcinogenic and generally not harmful to
health
Contributes in ozone depletion
Displaces air, i.e., acts as an asphyxiant:
CH4 + 2O2
CO2 + 2H2O
2CH4 + 3O2
2CO + 4H2O
CH4 + O2
C + 2H2O
15. NITROGEN OXIDES
Collectively known as NOx
Naturally produced during lightning bolts:
Also produced during combustion of fuels in
automobiles (especially high-speed vehicles) and in
electric power plants
Leads to increased smog, acid rain and water
quality deterioration
Significant as an irritant of mucus membranes
16. OZONE
Found naturally in stratosphere & troposphere
Formed by photochemical reactions between
volatile organic compounds and nitrogen oxides
Associated with increased mortality, especially in
warm season
Affect plant mechanisms
Affects health by:
decrements in lung function (like aggravating astma)
chest-related problems (coughing, tightness, burning)
decreasing phagocytic activity of alveolar macrophages
17. SULFUR DIOXIDE
73% of SO2 is released through fossil fuel
combustion
20% of SO2 is released through other industrial
processes (like smelting of ores)
Volcanic eruptions lead to increased emissions
Leads to respiratory problems, like asthma
Reacts with water vapour to form sulphurous acid:
SO2 (g) + H2O (g)
H2SO3 (l)
This causes acid rain, that result in decomposition
of important stonework & poisoning
18. UNBURNT HYDROCARBONS
Formed by low-temperature combustion of fossil
fuels, and from fuel ‘avoiding’ the flame zones in
combustion engines
Evaporation of petroleum also leads increased
emissions
Hydrocarbons like benzene are carcinogenic and
prevent normal cell metamorphosis
React with UV light and combine with other
pollutants, especially NOx to form photochemical
smog
20. EFFECTS OF GREENHOUSE GASES
CH4 and CO2 are the main greenhouse gases.
They maintain warmth on the earth that makes life
possible on the plant.
Excess release of these gases causes them to be
trapped in the atmosphere, thus they help the
atmosphere retain more heat.
This leads to a phenomena called ‘global
warming’, consequently leading to climate change.
Will lead to melting of ice caps and widespread
flooding.
Desertification and loss of biodiversity may occur.
21. THE OZONE LAYER
30,000 metres above the mean altitude of the earth;
lies in the stratosphere
Very warm, as absorbs UV light
Stops clouds & water vapour from escaping
Ozone depletion occurs due to CFCs (very stable):
Cl + O3
ClO + O2
ClO + O
Cl + O2
O 3+ O 2
2O2 (overall)
This is an autocatalysed reaction (chlorine)
Ozone hole aver Antarctica
Increased UV rays reach earth—skin cancers
22. REMEDIES FOR AIR POLLUTION
Flue gas desulphurisation stops SO2 emissions:
SO2 + CaCO3 → CaSO3 + CO2
Use of catalytic converters to render CO and NOx
harmless:
2NO + 2CO → 2CO2 + N2
2NO2 + 4CO → 4CO2 + N2
Using low-temperature combustion engines with
catalytic converters reduces NOx and unburnt
hydrocarbons
Alternatives to CFCs be introduced
Strict implementation of Montreal and Kyoto
Protocols be ensured
23. BIBLIOGRAPHY
Chemistry—A Course for O-Level by Christopher N.
Prescott
http://hyperphysics.phyastr.gsu.edu/hbase/thermo/liqair.html
GCSE Biology by D.G. Mackean
http://en.wikipedia.org/wiki/Carbon_monoxide
http://www.ccohs.ca/oshanswers/chemicals/chem_profil
es/methane.html
http://en.wikipedia.org/wiki/Methane
http://chemwiki.ucdavis.edu/Physical_Chemistry/Acids_
and_Bases/Case_Studies/Acid_Rain/Sources_of_Nitrog
en_Oxides
http://www.epa.gov/iaq/no2.html
http://www.a2gov.org/government/publicservices/system
s_planning/Environment/soe07/cleanair/Pages/nox.aspx
http://www.epa.gov/apti/ozonehealth/population.html
http://www.epa.gov/region07/air/quality/o3health.htm