Want to figure out if an attribute is an buyer attribute or just buyer address attribute?

I’ve the below mentioned code where I have to check if the attribute in as mentioned in question above is really a buyer attribute or buyer address attribute.

How do you make sure that?

private $custom_columns = array();
public function __construct()
{
    parent::__construct();
    $this->setId(‘customerGrid’);
    $this->setUseAjax(true);
    $this->setDefaultSort(‘email’);
    $this->setDefaultLimit(’200′);
    $this->setSaveParametersInSession(true);
    $attributeIds = Mage::getStoreConfig(‘sectionname/group/field’);
    $this->custom_columns = array($attributeIds);
}

$attributeIds gives back attribute codes like street basically if I choose Home Address, gender if I choose Gender and so forth. Ok now what condition ought to be put

to be able to know whether confirmed attribute is buyer or address attribute?

// Prepare Collection addition to store custom fields
foreach ($this->custom_columns as $col)
{
   //Some Condition if its a Customer attribute
   collection->addAttributeToSelect($col); 
   //else some condition if its a Customer address attribute
   $collection->joinAttribute($col, “customer_address/$col”, ‘default_billing’, null, ‘left’);
 }
 $this->setCollection($collection);
 return parent::_prepareCollection();
}

Among the finest to be aware what individuals conditions could be. Hope this can be more clearer to you.