Tag: Suntingan perangkat selulerSuntingan peramban seluler
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=== Kuantitatif konvensional ===
Salah satu dari presencekehadiran ofsenyawa certaintertentu substancesdalam insebuah a sample issampel knowndiketahui, the study of their absolutekehadiran orrelatif relativeatau abundanceabsolut candapat helpmembantu inmenentukan determiningproperti specificsecara propertiesrinci. KnowingMengetahui thekomposisi compositiondari of a samplesampel adalah sangat penting, dan beberapa cara telah dikembangkan untuk menjadikannya mungkin, seperti gravimetri[2] dan analisis volumetri. Analisis gravimetri yieldstidak moremenghasilkan data akurat mengenai komposisi suatu sampel dibanding analisis volumetri namun juga menghabiskan banyak waktu untuk dilakukan di dalam laboratorium. Analisis volumetri, di sisi lain, tidak perlu dilakukan dengan waktu yang lama dan dapat menghasilkan data analisa yang lebih akurat. Analisis volumetri dilakukan secara sederhana titrationtitrasi based in a reaksi netralisasi but it can also be a mengendap or a complex forming reaction as well as a titration based in a redox reaction. However, each method in quantitative analysis has a general specification, dalam reaksi netralisasi, untuk contohnya, reaksi that occurs is diantara suatu asam dengan suatu basa, menghasilkan suatu [[garam]] dan [[air]], hence the name netralisasi. In the reaksi pengendapan larutan standar yang digunakan dalam banyak kasus yakni [[perak nitrat]] sebagai pereaksi untuk mereaksikan with the ions present in the sample and to form a highly endapan tidak larut dalam air. Precipitation methods are often called simply as argentometry. In the two other methods the situation is the same. Complex forming titration is a reaction that occurs between metal ions and a standard solution that is in the most cases EDTA (Ethylene Diamine Tetra Acetic acid). In the redox titration that reaction is carried out between an oxidizing agent and a reduction agent.There are some more methods like Liebig method / Duma's method / Kjeldahl's method and Carius method for estimation of organic compounds.
For example, quantitative analysis performed by [mass spectrometry] on biological samples can determine, by the relative abundance ratio of specific proteins, indications of certain diseases, like cancer.
