#chemical analysis

[megushie]

Once again lamenting the fact that I am not a book/paper/paintings conservator with an extensive knowledge of chemistry and fancy equipment at my disposal.

I feel like so much focus has been put on arsenic green pigments, with just minor discussions on yellow and red (chromium, mercury, lead), almost always talking about book covers (book cloth and painted vellum/leather) or decorative endpapers.

I’ve found ONE article that mentions testing ONE green edge-painted book. That’s not a great sample. I want more info. I’m curious about the green painted book I’ve got on a shelf, and now wondering about the red edge painted books I have too…and apparently lead was commonly used for a few different things aside from pigment coloring?

Any chemist book lovers out there need a journal article or thesis idea??? Because there really needs to be more studies on other toxic pigments/chemicals used in bookbinding.

[thepastisalreadywritten]

[whats-in-a-sentence]

Routine chemical analyses involve determination of the mass percentages of C, H, N and S in a compound, and are often carried out using an automated elemental analyser such as the one shown in the schematic diagram in figure 3.8.

"Chemistry" 2e - Blackman, A., Bottle, S., Schmid, S., Mocerino, M., Wille, U.

[sarahstudieschem]

13th of April 2021

I spent today learning for my advanced chemical analysis course & it’s pne of my favourite classes! I think the material is interesting. The only downside is that during the lectures, the lecturer is just reading her slides.

I also made an iced coffee today! I tried making cold brew for the first time, but i dont think i used the right coffee grind for it? I’ll see tomorrow if i like it or not haha.

Plus, tomorrow is my practical driving exam! Wish me luck!

Have a great evening everyone!

[retrocgads]

UK 1983

[imperium-romanum]

How was iron smelted in ancient Israel? Researchers build kilns to find out

***

The Iron Age was a turning point in the history of the Land of Israel. Iron tools began to appear around 3,000 years ago, gradually supplanting the softer copper and bronze tools. It was also a time of dramatic political change, as the Hebrew kingdoms, Judah and Israel began to take shape, which may or may not have to do with the advent of iron.

However, it has never been quite understood how the ancients actually produced their iron.

Regarding the copper that preceded iron, archaeologists know where it was mined and smelted, thanks in no small part to advanced chemical analysis. It has even been proved, for example, that Cyprus was a key source of copper for the northernmost corners of Europe thousands of years ago.

Continue reading

[getting-through-it]

[redpandaempire]

Gas Chromatography

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