Persistent behavior problems canaffect educational attainment, proper social development,employment, and the likelihood of criminality.The causes of childrenâs mental health problems arevaried and complex and include genetic makeup, childpoverty, maternal depression, and poor or abusivecare.
Paper chromatography is a technique for separating and identifying mixtures that are (or can be) coloured. It has been largely replaced by thin layer chromatography, but is still a powerful teaching tool. Double-way paper chromatography, also called 'two-dimensional chromatography', uses two solvents and rotates the paper 90Â° in between.
Qualitative filter paper is also suitable for doing paper chromatography. An example of this can be seen if you click on the adjacent Technical Tab. Filter Paper-Ink Chromatography If you cut filter paper into a rectangular shape you can use it to do paper chromatography. Any of our sizes will do but most experiments can be done with the 70, 90 or 110mm sizes.