Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Ability of Cyanobacteria and Arthrobacter Species to Remove Gold Ions
  from Solution   The biosorption of Au(III) - Spirulina platensis and Au(III) - Arthrobacter
species (Arthrobacter globiformis and Arthrobacter oxidas) were studied at
simultaneous application of dialysis and atomic absorption analysis. Also
biosorption of Au(III) - Spirulina platensis at various pH were discussed.
Biosorption constants for Au-cyanobacteris Spirulina platensis at different pH,
and for Arthrobacter oxidas and Arthrobacter globiformis at pH=7.1 are :
  1. K=3.91 x 10-4 (Au- Arthrobacter oxidas 61B, pH=7.1)
  2. K=14.17 x 10-4 . (Au- Arthrobacter globiformis 151B, pH=7.1).
  3. K=2.07x10-4 (Au- Spirulina platensis, pH=7.1)
  4. K= 4.87x10-4 (Au- Spirulina platensis, pH=6.2)
  5. K=8.7x10-4 (Au- Spirulina platensis, pH=8.4)

32
The categories of this paper are: atom-ph
28
The categories of this paper are: alg-geom
33
The categories of this paper are: plasm-ph
36
The categories of this paper are: cmp-lg
29
The categories of this paper are: funct-an
19
The categories of this paper are: eess
20
The categories of this paper are: acc-phys
25
The categories of this paper are: patt-sol
1
The categories of this paper are: cs
10
The categories of this paper are: q-bio
4
The categories of this paper are: cond-mat
22
The categories of this paper are: chao-dyn
5
The categories of this paper are: gr-qc
11
The categories of this paper are: hep-lat
0
The categories of this paper are: hep-ph
17
The categories of this paper are: q-fin