describe the method of the  ZN staining?
138811
Ziehl-Neelsen (ZN) staining is the key technique for diagnosis of mycobacterial infections; however, a high percentage of patients exhibit positive signs of tuberculosis, as indicated by pathology, culture of mycobacteria, and polymerase chain-reaction analysis, and yet show negative results on ZN staining.
402176
You're right, spectroscopy is the proper method...Below you'll find a link to a quick and simple explanation.
1011122
1. Cut off a thin layer of the Onion's epidermis with a razor or very sharp object. \n2. Put it on a wet mount and put iodine on it. \n3. Then observe under low or high power to see the cells. \n4. Focus with the knobs of the microscope and turn slowly and carefully so you won't miss the details on the onion cells.\n\nGood Luck, I did this experiment this year and I think dat's all to it.
206168
zinc oxide...like in desitin ointment...clears it up
683604
1. water\n2. food coloring\n3. vinigure or sodium (for bubbling)\nsorry if this doesnt work\nhavnt done it in a long time
516829
Preparative HPLC should do the trick.  Try a search at these to see if an exact procedure might be on the web.\n\n\nhttp://www.scienceresearch.com/search/\n\nhttp://www.scirus.com/srsapp/
896985
Differential staining is largely a microbological tool that aids the scientists to clearly demarcate the complex cell and tissue structures. This procedure is essentially based on the principle that every cell or tissue has its own refractive index. Therefore, differential stains have two tasks to perform--to make conspicuous the tissue compartments by giving a suitable background colour, for example, in negative staining procedure for visualising capsules or endospores, and to set the refractive index perfect for the viewer,so that the compartment can be clearly seen.
914138
The greater the magnification, the more morphology you'll be able to see. 100x is preferable because bacteria are so small. Special stains help to see individual organelles inside bacteria, such as mitochondria, nucleus, cell membrane. Different bacteria take up different stains, which helps to identify them, such as gram positive and gram negative bacteria. The tubercle bacillus that causes tuberculosis will stain red on a blue background with the correct stain procedure.
893645
zipper, zoo, zebra, zilch, zero, Zorro, zinc
1157731
maybe there's lead in it.\n\nnickel, zinc, iron, magnesium, etc.
810244
If the reaction is correct it should be :\n  \n              2ZnS + 3O2  -------->  2ZnO + 2SO2
713038
the other product is zinc chloride.\nand the reaction is single replacement.
740769
USE DIFFERENT STAINING FOR BACTERIA EX. GRAM STAINING. LOOK UP DIFFERENT BACTERIA STAINING
613727
try:\nhttp://lb.chemie.uni-hamburg.de/static/data/50_zzk46n8n.html
273925
The simplest way is spectography. if you are speaking of a breathalizer test it is via conductivity.
737924
You can figure it out.\n\nIf a neutral atom of zinc has an atomic number of 30, and a mass number of 65, then it has 30 protons, 35 neutrons, and 30 electrons.\n\nProtons and neutrons are found in the nucleus.\nSo, draw a circle. Write "30p+" and "35 n" inside it.\nThis represents the nucleus.\n\nIn Bohr's model, electrons orbit the nucleus at specific energy levels. The first level holds up to 2 electrons.\nThe second holds up to 8.\nThe third holds up to 8.\nThe fourth holds up to 18.\nWe use dots to represent electrons.\n\nDraw a ring around the nucleus.\nAdd two dots to the ring, usually at noon and 6:00.\n\nDraw another ring around the first one.  Draw eight dots: two at noon, two at 3:00, two at 6:00, and two at 9:00.\n\nContinue adding rings and electrons.\nYou should end up with twelve dots in the outermost ring.\n\n(Which doesn't correspond with the  Lewis diagram for zinc, but that's  another story....)
999393
Most common method would be an oxidative digestion (most likely using ultraviolet radiation) in order to eliminate the organic matrix, and subsequent simultaneous ICP-OES analytics. Numerous other detection methods are available (electrochemistry, mass spectroscopy, atom absorption spectroscopy, even classical wet chemistry might give satisfactory results if done with extreme care and insight).\n\nThe heavy metals would be the usual suspects also monitored in drinking water, with special emphasis on any material used or present as impurity in the packaging (tin, lead, cadmium, zinc...)