zinc sulfate cenrifugal flotation in mongolia

A modified zinc sulfate centrifugal flotation technique is described It has proved satisfactory for detection of protozoan cysts and helminth eggs such as Schistosoma mansoni Clonorchis sinensis Trichostrongylus spp and Trichuris trichiura

Preparation of flotation solutions Zinc sulfate solution SG 118 Dissolve 331 g zinc sulfate in 900 ml warmed distilled water dH 2 O Add more dH 2 O until the entire solution weighs 1180 g this equates to a SG of 118 Mix solution and then check SG with hydrometer

When concentrating protozoan cysts and helminth larvae and eggs by centrifuging in zinc sulfate Frank adds a few drops of collodion diluted with an alcoholether mixture This forms a surface film to which cysts eggs and larvae adhere during centrifugation It can be lifted off intact by means of two sticks and examined in the usual way under a microscope

120 magnesium sulfate MgSO 4 SG 120 and zinc sulfate ZnSO 4 SG 120 These solutions are effective easy to make or commercially available and relatively inexpensive Flotation procedures vary from the simple to the complex The simplest procedure involves mixing a small amount of feces with flotation

This technique is predominantly used in parasitology laboratories By exploiting the density of the parasites particularly eggs it allows the parasites to float to the top of a dense solution final specific gravity of about 120 and can then be skimmed from the top of the tube The most commonly used reagent is zinc lated eggs as well as schistosoma and infertile Ascaris

The main usful elements in a flotation tailings in Inner Mongolia were lead zinc and silver and the main lead and zinc minerals were oxide minerals The content of sulfide minerals of lead and zinc especially sulfide mineral of lead were smallso It was difficult to get concentrate of sulfide mineral of flotation tailings was used as

Improved recovery rates using centrifugal flotation procedures are also substantiated by published studies 14 Conclusion Now that prepared flotation solutions and highquality inexpensive swinging bucket centrifuges can be purchased from several commercial sources it is much easier to adopt centrifugal flotation techniques

Dec 01 2016 · CONCLUSIONS The results showed that centrifugal flotation in zinc sulphate solution was significantly more likely to detect light helminths eggs such as those of T trichiura and E vermicularis in faeces than the centrifugal sedimentation process

Fifty canine fecal samples were evaluated by five flotation procedures to compare the sensitivity of the zinc sulfate ZnSO4 centrifugation flotation test with ZnSO4 flotation tests using benchtop incubation during the flotation period One or more parasite species were detected in 40 samples Resu

Zinc sulfate centrifugal fecal flotation was performed as described by Zajac and Conboy18 using 2 to 4 g of feces The feces and zinc sulfate solution specific gravity 118 were centrifuged with a coverslip in place for 5 minutes at 200 × g