The document describes paper chromatography and its use to separate mixtures. Paper chromatography is a technique used to separate colored mixtures, especially pigments. It involves placing a sample mixture at the bottom of a paper strip and allowing a solvent to travel up the paper, separating the different compounds based on how strongly they interact with the solvent and paper. Two-way paper chromatography uses two solvents to separate more complex mixtures. The document provides an example of using paper chromatography to separate ink, which is a complex liquid that contains pigments, dyes, and other materials.

1. Paper
Chromatography
Group 2-I St.Clare
Alison Caballero Nanz Zarate
Anne Michelle Elayda
Angelica Gob
Thea Lagriada
Alyssa Mata
Kirsten San Jose
By PresenterMedia.com

2. •Paper Chromatography
• Paper chromatography is an analytical
chemistry technique for separating and identifying
mixtures that are or can be colored,
especiallypigments. This can also be used in
secondary or primary colors in ink experiments. This
method has been largely replaced by thin layer
chromatography, however it is still a powerful
teaching tool. Two-way paper chromatography, also
called two-dimensional chromatography, involves
using two solvents and rotating the paper 90 in
between. This is useful for separating complex
mixtures of similar compounds, for example, amino
acids.

3. •Mixture to be separated
• Ink is a liquid or paste that contains pigments and/or
dyes and is used to color a surface to produce an
image, text, or design. Ink is used for drawing and/or
writing with a pen, brush, or quill. Thicker inks, in paste
form, are used extensively in letterpress and
lithographic printing.
Ink can be a complex medium, composed of
solvents, pigments, dyes, resins, lubricants, solubilizers,
surfactants, particulate matter, fluorescers, and other
materials. The components of inks serve many
purposes; the ink’s carrier, colorants, and other
additives control flow and thickness of the ink and its
appearance when dry.