Palmer.CHEM520.BenchmarkFinal

Hello and welcome to my lecture on barium sulfate.

Many Miss Kalen Bomber.

And I'm doing this for my camp by 20 course

gone Subs of analytical chemistry I hope this actually records

this time Let's go.

In this lecture, we will delve into the compound of

the wheat berry.

Um, something in two different applications for the compound will

be discussed as an overview will first discuss the physical

and chemical properties of barium selfie.

Then move on to the toxicological and safety information for

the compound, followed by the primary use of barium sulfate

and then the secondary application that I included in this

lecture. And we'll conclude with the list of my references.

I wanted to begin rec showing the physical structure of

barium sulfate.

It is a pretty simple compound, but I still wanted

to show this very himself.

It is just composed of the singular barium two plus

cat ion and the still fate to minus as a

four to minus Polly Atomic.

And I own I got this image from the pup

come website that I links below bury himself.

It appears the white or yellowish powder or crystals, and

that's why I included this image here, the barium sulphate.

The name itself has Ah, this anonymous with bear right,

which is the middle or version that Barrett, the very,

um solid that barium sulfate is found in nature that

included the molar mass.

Here it is a rather heavy element because rather heavy

compound due to barium being a rather heavy element, barium

got its name derived from the Greek embarrass for heavy

Harry himself.

It is the only insoluble version of barium, which is

significant for its health and talked toxicological information.

I included the melting point of very himself.

Eight here.

At this point, it does begin to decompose.

And then I also included the density moving on to

the chemical properties very himself.

Feet is the only insoluble form of their of barium,

and all other forms of barium are soluble in other

forms of barium is toxic to humans, but the variant

self, it is allowed to be safely ingested because of

its insoluble ity.

The primary use of barium sulfate is used in oil

well drilling fluid.

This is our primary application are secondary application I included

is medicinally barium sulphate is used in solution as a

radio opaque contrast agent.

Besides this Barry himself, it is also utilized in the

manufacturing of photographic papers, artificial ivory and cellophane as a

filler for rubber linoleum, oilcloth, poly meric fibers and resins,

paper and lithographic inks, as well as a water color

pigment for colored paper in wallpaper and as a pigment

in white paint, as well as as a hardening agent

in cement.

Moving on.

There is a great potential for toxicity to the human

body with barium sulphate, which I will discuss and then

barium sulfate.

Being the only in soluble form of barium does tend

to accumulate and remain in the soil and water.

Barium as a free ion, is readily absorbed by the

lung and or gastrointestinal tract and will accumulate in the

skeleton. Acute or chronic exposure to bury themselves can result

in a number of disorders, ranging from renal intoxication to

hypertension, cardiac malfunction and as well as hearing loss.

The kidneys are the most sensitive organ to barium, which

is wise specified.

The renal partney, sensitivity soluble and barium as an ion

is a muscle poison because barium is a physiological antagonised

of potassium, and we'll actually compete with and block the

potassium ion channels in the sodium, potassium pump and cell

membranes. Barium sulphate is also considered an irritant of the

eyes, nose and upper respiratory system, but it is non

combustible and poses no fire potential.

The Onley example of fire potential is thought is that

it's thought that heating it with aluminum can produce an

explosion moving on to the fate of barium sulfate in

the ecosystem and the in their environment.

In the water, barium sulfate is insoluble, so it will

remain. However, if barium is allowed to separate from from

the sulfate and I am and in bond to either

a nitrate chloride, carbonate or other soluble and ions, then

it will be able to leave the water easily, however,

otherwise bury himself.

Eight. It will just remain in the soil.

Under typical environmental conditions, barium will displace other ads.

Orb alkaline earth metals such as manganese, four oxide silicon

for oxide and titanium.

For oxide.

However, barium gets displaced from aluminum oxide by other alkaline

earth metals.

Moving on the primary application of himself is in Boy

isn't as is used as an additive to oil well

drilling fluids.

Almost 98% of Barry is used in this manner, and

it's done to make the oil well drilling fluid denser

and seal the space around the drill bent.

This creates a resultant mud, which is has a water

as a continuous phase, and water may contain several dissolve

substances, including alkali salts and surfactants, organic polymers, droplets of

the most wide oil and various insoluble substance to such

as bear right clearing cuttings in suspension.

Various thickening and suspending agents are added as well as

bear, right and um, this result into mud flushes.

Chip ings out and simultaneously cools and lubricates the drill

bit. However, with the addition of barium sulphate in the

oil well drilling, a scale will build up of the

compound in the oil and gas production systems and do

the barium sulfate, innate physical hardness and chemical and thermal

stability. It is one of the most difficult types of

scale to inhibit.

I'm very despite all this has been used, is awaiting

agent in drilling fluids since the 19 twenties and its

preferred over other materials because of its high density low

production costs, low abrasiveness and ease of handling.

Other waiting materials have been tried have been used, but

they are end up being problematic or costly.

So despite the consequence of the scale building up, Barrett

is still used in oil well drilling fluids.

I have included in ah, link to a YouTube video

which discusses this, um, waiting agent this this use of

Barry himself it as a waiting agent in the muds,

moving on to our second application of barium sulphate.

Barium self.

It is used as a contrast agent in radiography of

the G I tract, as I've already discussed, and I

will discuss the three examinations conducted and then we will

review one more time the consequence of soluble barium accumulation

in the human body.

Barium sulfate when drink and solution will coat the lining

of the gastrointestinal system, and it depends on what is

being examined for what is going to be coded.

There are three tests.

The barium swallow test or upper G I.

Siri's, the lower G I Siri's or the barium enema

and the small bowel followed through.

Each will diagnose different.

Each will diagnose different abnormalities.

Tumors, polyps, et cetera of the G I tract, the

barium swallow test, or upper G.

I will coat the esophagus and the stomach and diagnose

any abnormalities or anything there.

The lower G I series will coat the intestine and

will either be done.

It's a single contrast or a double contrast.

The single contrast image will diagnose any larger prominent abnormalities

in the large intestine, while the double contrast will bring

the light any of this smaller abnormalities in the large

intestine. The final barium eggs X ray is the small

bowel followed through, which illuminates the small intestine and for

any abnormalities.

Tallet tumors, polyps, et cetera.

I wanted to include an image of the study in

potassium pump in cellular membranes.

Here, uh, to further illustrate the effect of barium sulfate

inhibiting this active transportation across the cell membrane.

Finally, I wanted to include my references.

This video is shorter.

However, when I completed it the first time it got

to you

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